Calmar Weather Records (CA003011120)

Record envelope, standing records and threshold days for Calmar (CA003011120), Alberta, Canada, with 110 years of record.

Key Facts for Calmar

Calmar (CA003011120) is a weather station in Alberta, Canada at 53.28 latitude and -113.87 longitude, 720 m (2,362 ft) above sea level.
The station reports from 1914 to 2023, 110 years of record.
1,464 records set at Calmar still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Calmar set a daily record low minimum temperature of -39.5 C (-39.1 F) on 24 December 1983.

About the Station

Location: Alberta, Canada, 53.28 latitude, -113.87 longitude.
Elevation: 720 m (2,362 ft).
Period of record: 1914 to 2023, 110 years.
Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Calmar. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Calmar, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	14.4 C (57.9 F)	-48.9 C (-56.0 F)	n/a	n/a
Feb	17.2 C (63.0 F)	-49.4 C (-56.9 F)	n/a	n/a
Mar	20.0 C (68.0 F)	-42.2 C (-44.0 F)	n/a	n/a
Apr	31.1 C (88.0 F)	-31.7 C (-25.1 F)	n/a	n/a
May	32.2 C (90.0 F)	-11.1 C (12.0 F)	n/a	n/a
Jun	36.7 C (98.1 F)	-5.0 C (23.0 F)	n/a	n/a
Jul	35.6 C (96.1 F)	-3.3 C (26.1 F)	n/a	n/a
Aug	34.4 C (93.9 F)	-3.3 C (26.1 F)	n/a	n/a
Sep	34.5 C (94.1 F)	-16.1 C (3.0 F)	n/a	n/a
Oct	28.9 C (84.0 F)	-28.9 C (-20.0 F)	n/a	n/a
Nov	23.3 C (73.9 F)	-40.6 C (-41.1 F)	n/a	n/a
Dec	17.8 C (64.0 F)	-48.9 C (-56.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Calmar still stand. 1936 holds the most, with 58.

Standing records at Calmar by the year they were set
Year set	Standing records
1916	28
1917	40
1918	31
1919	48
1920	20
1921	30
1922	20
1923	26
1924	41
1925	25
1926	41
1927	15
1928	37
1929	20
1930	29
1931	22
1932	21
1933	18
1934	39
1935	33
1936	58
1937	15
1938	13
1939	34
1940	18
1941	20
1942	20
1943	24
1944	20
1945	17
1946	15
1947	12
1948	17
1949	25
1950	38
1951	26
1952	9
1953	9
1954	29
1955	19
1956	24
1957	24
1958	9
1959	18
1960	7
1961	24
1962	16
1963	21
1964	17
1965	22
1966	14
1967	13
1968	23
1969	13
1970	23
1971	9
1972	17
1973	7
1974	9
1975	6
1976	14
1977	30
1978	13
1979	14
1980	15
1981	20
1982	8
1983	12

All-Time Record Progression

2 new records

2 all-time records were set at Calmar between 14 January 1950 and 30 June 1979. Each dot is a new record.

When Calmar set new all-time records
Date	Kind	Detail
1950-01-14	Record low maximum temperature	Record low maximum temperature -36.1 C (-33.0 F)
1979-06-30	Record high minimum temperature	Record high minimum temperature 18.0 C (64.4 F)

Wettest Day of Each Month

Jun: 93.0 mm (3.7 in)

The wettest day on record for each calendar month at Calmar. The most was 93.0 mm (3.7 in) on 13 June 1944.

Record daily precipitation for each month at Calmar
Month	Record daily precipitation (mm)	Date
Jan	20.3 mm (0.8 in)	12 January 1929
Feb	20.3 mm (0.8 in)	21 February 1925
Mar	27.4 mm (1.1 in)	17 March 1940
Apr	35.1 mm (1.4 in)	21 April 1932
May	54.9 mm (2.2 in)	1 May 1951
Jun	93.0 mm (3.7 in)	13 June 1944
Jul	79.0 mm (3.1 in)	22 July 1981
Aug	71.1 mm (2.8 in)	2 August 1960
Sep	65.3 mm (2.6 in)	13 September 1958
Oct	32.3 mm (1.3 in)	30 October 1924
Nov	43.2 mm (1.7 in)	15 November 1942
Dec	33.8 mm (1.3 in)	27 December 1955

Period of Record Coverage

1915 to 1983

69 years of record at Calmar, 1915 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1915, 1917.

Days with data per year at Calmar
Year	Days with data	Share of year	Complete
1915	61	17%	No
1916	365	100%	Yes
1917	303	83%	No
1918	347	95%	Yes
1919	365	100%	Yes
1920	366	100%	Yes
1921	365	100%	Yes
1922	365	100%	Yes
1923	365	100%	Yes
1924	366	100%	Yes
1925	365	100%	Yes
1926	365	100%	Yes
1927	365	100%	Yes
1928	366	100%	Yes
1929	365	100%	Yes
1930	365	100%	Yes
1931	365	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	365	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	363	99%	Yes
1948	363	99%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	356	98%	Yes
1960	365	100%	Yes
1961	362	99%	Yes
1962	365	100%	Yes
1963	334	92%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	364	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	335	92%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	363	99%	Yes
1982	355	97%	Yes
1983	359	98%	Yes

Latest Records

Latest records at Calmar
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 December 1983	Calmar, CA	daily low min	-39.5 C (-39.1 F)	0.1 C (0.2 F)	65 years	25 of 100 (Routine)
28 September 1983	Calmar, CA	daily low min	-8.0 C (17.6 F)	0.8 C (1.4 F)	64 years	27 of 100 (Routine)
11 August 1983	Calmar, CA	monthly high min	17.5 C (63.5 F)	0.5 C (0.9 F)	1 year	17 of 100 (Routine)
10 August 1983	Calmar, CA	daily high max	32.5 C (90.5 F)	0.8 C (1.4 F)	54 years	23 of 100 (Routine)
10 August 1983	Calmar, CA	daily high min	14.5 C (58.1 F)	0.1 C (0.2 F)	9 years	8 of 100 (Routine)
1 August 1983	Calmar, CA	daily high min	16.0 C (60.8 F)	0.4 C (0.7 F)	9 years	9 of 100 (Routine)
15 July 1983	Calmar, CA	daily low max	13.5 C (56.3 F)	0.4 C (0.7 F)	45 years	19 of 100 (Routine)
8 July 1983	Calmar, CA	daily high min	15.0 C (59.0 F)	1.7 C (3.1 F)	40 years	23 of 100 (Routine)
19 June 1983	Calmar, CA	daily rain	43.0 mm (1.7 in)	23.7 mm (0.9 in)	65 years	52 of 100 (Notable)
22 April 1983	Calmar, CA	daily high max	22.0 C (71.6 F)	3.1 C (5.6 F)	41 years	22 of 100 (Routine)
7 April 1983	Calmar, CA	daily high min	3.5 C (38.3 F)	0.7 C (1.3 F)	5 years	8 of 100 (Routine)
15 March 1983	Calmar, CA	daily high min	-1.5 C (29.3 F)	0.5 C (0.9 F)	1 year	6 of 100 (Routine)
14 March 1983	Calmar, CA	daily high min	0.0 C (32.0 F)	0.6 C (1.1 F)	48 years	20 of 100 (Routine)
13 October 1982	Calmar, CA	daily high min	7.0 C (44.6 F)	2.0 C (3.6 F)	35 years	19 of 100 (Routine)
3 October 1982	Calmar, CA	daily rain	20.2 mm (0.8 in)	9.8 mm (0.39 in)	15 years	20 of 100 (Routine)
2 October 1982	Calmar, CA	daily rain	9.4 mm (0.37 in)	1.5 mm (0.06 in)	24 years	16 of 100 (Routine)
26 August 1982	Calmar, CA	daily low min	0.5 C (32.9 F)	0.1 C (0.2 F)	60 years	24 of 100 (Routine)
4 July 1982	Calmar, CA	daily rain	62.0 mm (2.4 in)	23.6 mm (0.9 in)	65 years	50 of 100 (Notable)
15 June 1982	Calmar, CA	daily high min	14.0 C (57.2 F)	0.1 C (0.2 F)	12 years	9 of 100 (Routine)
15 May 1982	Calmar, CA	daily high min	10.5 C (50.9 F)	1.1 C (2.0 F)	45 years	21 of 100 (Routine)

Climate Trend

64 complete years, 1916 to 1983

One stripe for each of 64 complete years at Calmar, 1916 to 1983. Blue stripes are years cooler than the station's own mean of 2.1 C (35.8 F); red stripes are warmer. The coolest year was 1950, at -0.3 C (31.5 F), and the warmest was 1981, at 5.1 C (41.3 F). The strongest colour marks a difference of 3.1 C (5.6 F).

Annual mean temperature at Calmar as warming stripes, 1916 to 1983
Year	Annual mean temperature	Difference from the station mean
1916	0.7 C	-1.45 C
1919	0.7 C	-1.36 C
1920	0.9 C	-1.16 C
1921	1.8 C	-0.31 C
1922	1.5 C	-0.65 C
1923	3.0 C	+0.85 C
1924	1.9 C	-0.24 C
1925	2.0 C	-0.09 C
1926	3.0 C	+0.91 C
1927	0.1 C	-2.05 C
1928	3.5 C	+1.37 C
1929	1.8 C	-0.26 C
1930	2.9 C	+0.81 C
1931	3.6 C	+1.52 C
1932	1.6 C	-0.53 C
1933	0.6 C	-1.52 C
1934	3.5 C	+1.37 C
1935	0.8 C	-1.30 C
1936	0.7 C	-1.38 C
1937	1.3 C	-0.76 C
1938	3.1 C	+1.00 C
1939	3.1 C	+0.99 C
1940	2.2 C	+0.07 C
1941	3.2 C	+1.06 C
1942	2.5 C	+0.37 C
1943	2.8 C	+0.71 C
1944	3.6 C	+1.48 C
1945	1.2 C	-0.89 C
1946	2.0 C	-0.12 C
1947	2.1 C	+0.00 C
1948	1.5 C	-0.63 C
1949	2.1 C	-0.01 C
1950	-0.3 C	-2.37 C
1951	-0.1 C	-2.24 C
1952	3.0 C	+0.89 C
1953	3.3 C	+1.16 C
1954	1.8 C	-0.32 C
1955	0.7 C	-1.41 C
1956	1.6 C	-0.46 C
1957	2.4 C	+0.25 C
1958	3.1 C	+0.97 C
1959	2.3 C	+0.22 C
1960	2.7 C	+0.55 C
1961	3.1 C	+1.03 C
1962	2.7 C	+0.62 C
1964	2.3 C	+0.18 C
1965	1.3 C	-0.84 C
1966	1.0 C	-1.13 C
1967	2.3 C	+0.15 C
1968	2.5 C	+0.39 C
1969	1.4 C	-0.67 C
1970	1.5 C	-0.58 C
1971	1.8 C	-0.28 C
1972	1.1 C	-1.01 C
1973	2.1 C	-0.01 C
1974	2.3 C	+0.15 C
1975	1.8 C	-0.32 C
1976	4.0 C	+1.94 C
1977	3.8 C	+1.68 C
1979	2.3 C	+0.22 C
1980	2.9 C	+0.75 C
1981	5.1 C	+3.04 C
1982	0.9 C	-1.23 C
1983	2.9 C	+0.81 C

The fitted trend in annual mean temperature here over 1916 to 1983 is 0.12 C (-0.02 to 0.26) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.21 F (-0.04 to 0.46) per decade. The slope is a straight line fitted to 64 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Calmar
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.12 C (-0.02 to 0.26) per decade	0.21 F (-0.04 to 0.46) per decade	1916 to 1983	64	Not clearly different from zero
Mean daily maximum	-0.1 C (-0.2 to 0.1) per decade	-0.1 F (-0.4 to 0.2) per decade	1916 to 1983	64	Not clearly different from zero
Mean daily minimum	0.3 C (0.2 to 0.4) per decade	0.5 F (0.3 to 0.8) per decade	1916 to 1983	64	Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1914 to 1983

Yearly extremes at Calmar: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	1937	31.7 C (89.1 F)	69
Coldest night (TNn)	-49.4 C (-56.9 F)	1936	-40.0 C (-40.0 F)	69
Wettest day (Rx1day)	93.0 mm (3.7 in)	1944	37.8 mm (1.5 in)	70
Wettest five days (Rx5day)	164.6 mm (6.5 in)	1944	60.1 mm (2.4 in)	70
Longest dry spell (CDD)	61 days	1931	27 days	70

Hottest day (TXx)

The hottest day of the year at Calmar, 1914 to 1983. The record is 36.7 C (98.1 F) in 1937, marked on the chart; the median year is 31.7 C (89.1 F).

Hottest day (TXx) at Calmar by year
Year	Hottest day (TXx)
1914	n/a
1915	11.1 C (52.0 F)
1916	27.8 C (82.0 F)
1917	28.3 C (82.9 F)
1918	31.7 C (89.1 F)
1919	31.1 C (88.0 F)
1920	32.8 C (91.0 F)
1921	30.6 C (87.1 F)
1922	34.4 C (93.9 F)
1923	29.4 C (84.9 F)
1924	35.6 C (96.1 F)
1925	31.7 C (89.1 F)
1926	31.7 C (89.1 F)
1927	29.4 C (84.9 F)
1928	31.7 C (89.1 F)
1929	30.0 C (86.0 F)
1930	32.2 C (90.0 F)
1931	30.6 C (87.1 F)
1932	32.2 C (90.0 F)
1933	32.2 C (90.0 F)
1934	32.8 C (91.0 F)
1935	32.8 C (91.0 F)
1936	33.9 C (93.0 F)
1937	36.7 C (98.1 F)
1938	32.8 C (91.0 F)
1939	34.4 C (93.9 F)
1940	31.7 C (89.1 F)
1941	35.6 C (96.1 F)
1942	31.1 C (88.0 F)
1943	30.0 C (86.0 F)
1944	30.6 C (87.1 F)
1945	32.8 C (91.0 F)
1946	32.2 C (90.0 F)
1947	29.4 C (84.9 F)
1948	30.6 C (87.1 F)
1949	33.3 C (91.9 F)
1950	32.8 C (91.0 F)
1951	30.6 C (87.1 F)
1952	30.6 C (87.1 F)
1953	28.9 C (84.0 F)
1954	31.1 C (88.0 F)
1955	31.7 C (89.1 F)
1956	31.7 C (89.1 F)
1957	28.9 C (84.0 F)
1958	31.7 C (89.1 F)
1959	33.3 C (91.9 F)
1960	32.2 C (90.0 F)
1961	35.0 C (95.0 F)
1962	28.9 C (84.0 F)
1963	30.6 C (87.1 F)
1964	33.3 C (91.9 F)
1965	32.8 C (91.0 F)
1966	31.1 C (88.0 F)
1967	34.4 C (93.9 F)
1968	31.1 C (88.0 F)
1969	32.2 C (90.0 F)
1970	33.3 C (91.9 F)
1971	31.1 C (88.0 F)
1972	31.1 C (88.0 F)
1973	30.6 C (87.1 F)
1974	30.0 C (86.0 F)
1975	31.1 C (88.0 F)
1976	28.9 C (84.0 F)
1977	31.7 C (89.1 F)
1978	31.1 C (88.0 F)
1979	31.5 C (88.7 F)
1980	29.0 C (84.2 F)
1981	34.5 C (94.1 F)
1982	30.0 C (86.0 F)
1983	32.5 C (90.5 F)

Coldest night (TNn)

The coldest night of the year at Calmar, 1914 to 1983. The record is -49.4 C (-56.9 F) in 1936, marked on the chart; the median year is -40.0 C (-40.0 F).

Coldest night (TNn) at Calmar by year
Year	Coldest night (TNn)
1914	n/a
1915	-21.7 C (-7.1 F)
1916	-47.2 C (-53.0 F)
1917	-46.7 C (-52.1 F)
1918	-43.9 C (-47.0 F)
1919	-43.3 C (-45.9 F)
1920	-47.8 C (-54.0 F)
1921	-44.4 C (-47.9 F)
1922	-46.1 C (-51.0 F)
1923	-39.4 C (-38.9 F)
1924	-48.9 C (-56.0 F)
1925	-38.9 C (-38.0 F)
1926	-38.9 C (-38.0 F)
1927	-43.9 C (-47.0 F)
1928	-42.8 C (-45.0 F)
1929	-48.3 C (-54.9 F)
1930	-43.3 C (-45.9 F)
1931	-34.4 C (-29.9 F)
1932	-44.4 C (-47.9 F)
1933	-39.4 C (-38.9 F)
1934	-39.4 C (-38.9 F)
1935	-45.6 C (-50.1 F)
1936	-49.4 C (-56.9 F)
1937	-42.2 C (-44.0 F)
1938	-45.6 C (-50.1 F)
1939	-43.9 C (-47.0 F)
1940	-37.2 C (-35.0 F)
1941	-40.6 C (-41.1 F)
1942	-34.4 C (-29.9 F)
1943	-48.3 C (-54.9 F)
1944	-34.4 C (-29.9 F)
1945	-37.8 C (-36.0 F)
1946	-38.3 C (-36.9 F)
1947	-44.4 C (-47.9 F)
1948	-38.3 C (-36.9 F)
1949	-40.0 C (-40.0 F)
1950	-48.9 C (-56.0 F)
1951	-42.2 C (-44.0 F)
1952	-38.9 C (-38.0 F)
1953	-42.8 C (-45.0 F)
1954	-40.0 C (-40.0 F)
1955	-35.6 C (-32.1 F)
1956	-38.3 C (-36.9 F)
1957	-34.4 C (-29.9 F)
1958	-37.2 C (-35.0 F)
1959	-41.7 C (-43.1 F)
1960	-38.3 C (-36.9 F)
1961	-38.3 C (-36.9 F)
1962	-43.9 C (-47.0 F)
1963	-35.6 C (-32.1 F)
1964	-37.2 C (-35.0 F)
1965	-38.3 C (-36.9 F)
1966	-41.1 C (-42.0 F)
1967	-35.0 C (-31.0 F)
1968	-37.2 C (-35.0 F)
1969	-44.4 C (-47.9 F)
1970	-43.9 C (-47.0 F)
1971	-39.4 C (-38.9 F)
1972	-46.7 C (-52.1 F)
1973	-35.0 C (-31.0 F)
1974	-42.8 C (-45.0 F)
1975	-37.2 C (-35.0 F)
1976	-46.1 C (-51.0 F)
1977	-44.4 C (-47.9 F)
1978	-38.9 C (-38.0 F)
1979	-40.0 C (-40.0 F)
1980	-39.0 C (-38.2 F)
1981	-35.5 C (-31.9 F)
1982	-39.5 C (-39.1 F)
1983	-39.5 C (-39.1 F)

Wettest day (Rx1day)

The wettest day of the year at Calmar, 1914 to 1983. The record is 93.0 mm (3.7 in) in 1944, marked on the chart; the median year is 37.8 mm (1.5 in).

Wettest day (Rx1day) at Calmar by year
Year	Wettest day (Rx1day)
1914	31.2 mm (1.2 in)
1915	42.9 mm (1.7 in)
1916	38.4 mm (1.5 in)
1917	52.8 mm (2.1 in)
1918	28.2 mm (1.1 in)
1919	33.0 mm (1.3 in)
1920	46.2 mm (1.8 in)
1921	27.2 mm (1.1 in)
1922	37.3 mm (1.5 in)
1923	33.5 mm (1.3 in)
1924	32.3 mm (1.3 in)
1925	31.5 mm (1.2 in)
1926	58.4 mm (2.3 in)
1927	29.5 mm (1.2 in)
1928	22.1 mm (0.9 in)
1929	31.5 mm (1.2 in)
1930	21.3 mm (0.8 in)
1931	60.7 mm (2.4 in)
1932	35.1 mm (1.4 in)
1933	41.7 mm (1.6 in)
1934	37.1 mm (1.5 in)
1935	29.0 mm (1.1 in)
1936	31.8 mm (1.3 in)
1937	67.1 mm (2.6 in)
1938	45.5 mm (1.8 in)
1939	26.2 mm (1.0 in)
1940	28.4 mm (1.1 in)
1941	49.0 mm (1.9 in)
1942	43.2 mm (1.7 in)
1943	22.4 mm (0.9 in)
1944	93.0 mm (3.7 in)
1945	39.4 mm (1.6 in)
1946	32.5 mm (1.3 in)
1947	37.1 mm (1.5 in)
1948	52.1 mm (2.1 in)
1949	46.2 mm (1.8 in)
1950	33.5 mm (1.3 in)
1951	54.9 mm (2.2 in)
1952	40.6 mm (1.6 in)
1953	62.5 mm (2.5 in)
1954	39.4 mm (1.6 in)
1955	34.5 mm (1.4 in)
1956	35.3 mm (1.4 in)
1957	23.1 mm (0.9 in)
1958	65.3 mm (2.6 in)
1959	30.5 mm (1.2 in)
1960	71.1 mm (2.8 in)
1961	33.8 mm (1.3 in)
1962	33.0 mm (1.3 in)
1963	16.5 mm (0.6 in)
1964	20.3 mm (0.8 in)
1965	41.9 mm (1.6 in)
1966	24.9 mm (1.0 in)
1967	22.4 mm (0.9 in)
1968	58.2 mm (2.3 in)
1969	39.9 mm (1.6 in)
1970	61.2 mm (2.4 in)
1971	39.9 mm (1.6 in)
1972	31.0 mm (1.2 in)
1973	53.3 mm (2.1 in)
1974	48.8 mm (1.9 in)
1975	39.4 mm (1.6 in)
1976	32.3 mm (1.3 in)
1977	39.4 mm (1.6 in)
1978	73.7 mm (2.9 in)
1979	31.4 mm (1.2 in)
1980	44.1 mm (1.7 in)
1981	79.0 mm (3.1 in)
1982	62.0 mm (2.4 in)
1983	43.0 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Calmar, 1914 to 1983. The record is 164.6 mm (6.5 in) in 1944, marked on the chart; the median year is 60.1 mm (2.4 in).

Wettest five days (Rx5day) at Calmar by year
Year	Wettest five days (Rx5day)
1914	33.8 mm (1.3 in)
1915	76.2 mm (3.0 in)
1916	85.2 mm (3.4 in)
1917	62.4 mm (2.5 in)
1918	45.0 mm (1.8 in)
1919	50.0 mm (2.0 in)
1920	52.1 mm (2.1 in)
1921	35.8 mm (1.4 in)
1922	64.7 mm (2.5 in)
1923	52.1 mm (2.1 in)
1924	66.2 mm (2.6 in)
1925	58.4 mm (2.3 in)
1926	109.6 mm (4.3 in)
1927	43.5 mm (1.7 in)
1928	50.3 mm (2.0 in)
1929	53.8 mm (2.1 in)
1930	31.5 mm (1.2 in)
1931	85.7 mm (3.4 in)
1932	75.2 mm (3.0 in)
1933	75.2 mm (3.0 in)
1934	45.0 mm (1.8 in)
1935	48.5 mm (1.9 in)
1936	50.1 mm (2.0 in)
1937	110.3 mm (4.3 in)
1938	61.7 mm (2.4 in)
1939	59.0 mm (2.3 in)
1940	66.5 mm (2.6 in)
1941	72.9 mm (2.9 in)
1942	71.5 mm (2.8 in)
1943	36.1 mm (1.4 in)
1944	164.6 mm (6.5 in)
1945	59.2 mm (2.3 in)
1946	54.2 mm (2.1 in)
1947	49.5 mm (1.9 in)
1948	84.6 mm (3.3 in)
1949	80.7 mm (3.2 in)
1950	59.9 mm (2.4 in)
1951	97.9 mm (3.9 in)
1952	71.2 mm (2.8 in)
1953	84.3 mm (3.3 in)
1954	64.7 mm (2.5 in)
1955	59.0 mm (2.3 in)
1956	49.7 mm (2.0 in)
1957	35.6 mm (1.4 in)
1958	108.2 mm (4.3 in)
1959	42.9 mm (1.7 in)
1960	156.7 mm (6.2 in)
1961	63.8 mm (2.5 in)
1962	60.2 mm (2.4 in)
1963	30.7 mm (1.2 in)
1964	52.8 mm (2.1 in)
1965	107.5 mm (4.2 in)
1966	45.9 mm (1.8 in)
1967	34.6 mm (1.4 in)
1968	61.9 mm (2.4 in)
1969	44.2 mm (1.7 in)
1970	79.0 mm (3.1 in)
1971	82.2 mm (3.2 in)
1972	45.1 mm (1.8 in)
1973	84.8 mm (3.3 in)
1974	59.8 mm (2.4 in)
1975	55.2 mm (2.2 in)
1976	45.8 mm (1.8 in)
1977	53.4 mm (2.1 in)
1978	79.5 mm (3.1 in)
1979	43.7 mm (1.7 in)
1980	66.2 mm (2.6 in)
1981	99.4 mm (3.9 in)
1982	133.6 mm (5.3 in)
1983	68.7 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Calmar, 1914 to 1983. The record is 61 days in 1931, marked on the chart; the median year is 27 days.

Longest dry spell (CDD) at Calmar by year
Year	Longest dry spell (CDD)
1914	23 days
1915	33 days
1916	35 days
1917	27 days
1918	28 days
1919	39 days
1920	38 days
1921	30 days
1922	30 days
1923	49 days
1924	26 days
1925	25 days
1926	22 days
1927	23 days
1928	30 days
1929	23 days
1930	40 days
1931	61 days
1932	25 days
1933	28 days
1934	22 days
1935	27 days
1936	16 days
1937	21 days
1938	44 days
1939	26 days
1940	20 days
1941	30 days
1942	28 days
1943	23 days
1944	31 days
1945	22 days
1946	21 days
1947	17 days
1948	26 days
1949	50 days
1950	25 days
1951	19 days
1952	38 days
1953	35 days
1954	25 days
1955	27 days
1956	13 days
1957	23 days
1958	49 days
1959	43 days
1960	23 days
1961	29 days
1962	20 days
1963	19 days
1964	22 days
1965	24 days
1966	26 days
1967	38 days
1968	25 days
1969	27 days
1970	26 days
1971	43 days
1972	24 days
1973	38 days
1974	29 days
1975	26 days
1976	40 days
1977	53 days
1978	28 days
1979	37 days
1980	25 days
1981	36 days
1982	31 days
1983	19 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

64 years with a frost

Across 64 years with a frost, the median last spring frost at Calmar falls on 31 May and the median first autumn frost on 6 September, which leaves a median of 97 days between them.

In 1952 to 1983 the median growing season was 113 days. That is 33 days more than in 1916 to 1947.

Fitted over all years, the growing season changes by +8.3 days per decade at this station.

Frost dates and growing season at Calmar
Measure	Median, all years	Earliest period (1916 to 1947)	Recent period (1952 to 1983)	Recent against earliest	Fitted trend
Last spring frost	31 May	7 June	22 May	16 days earlier	-3.5 days per decade
First autumn frost	6 September	31 August	12 September	12 days later	+4.8 days per decade
Growing days	97 days	80 days	113 days	33 days more	+8.3 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

67 years, 1916 to 1983

A day with at least 37.8 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 95.8 mm (3.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Calmar: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	37.8 mm (1.5 in)
5 years	51.4 mm (2.0 in)
10 years	61.1 mm (2.4 in)
25 years	74.3 mm (2.9 in)
50 years	84.8 mm (3.3 in)
100 years	95.8 mm (3.8 in)	Longer than the 67 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 67 years of values from 1916 to 1983.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 93.0 mm (3.7 in) in 1944; 79.0 mm (3.1 in) in 1981; 73.7 mm (2.9 in) in 1978.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Calmar standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Calmar threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).