Plon (See) Weather Records (GME00127366)

Record envelope, standing records and threshold days for Plon (See) (GME00127366), Germany, with 48 years of record.

Key Facts for Plon (See)

Plon (See) (GME00127366) is a weather station in Germany at 54.16 latitude and 10.40 longitude, 24 m (79 ft) above sea level.
The station reports from 1950 to 1997, 48 years of record.
1,464 records set at Plon (See) still stand.
Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
Plon (See) set a daily record low minimum temperature of -15.5 C (4.1 F) on 3 January 1997.

About the Station

Location: Germany, 54.16 latitude, 10.40 longitude.
Elevation: 24 m (79 ft).
Period of record: 1950 to 1997, 48 years.
Eligible elements: tmax, tmin, prcp, snwd.

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 Plon (See). 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 Plon (See), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	12.0 C (53.6 F)	-20.0 C (-4.0 F)	n/a	n/a
Feb	15.0 C (59.0 F)	-22.0 C (-7.6 F)	n/a	n/a
Mar	19.5 C (67.1 F)	-17.8 C (0.0 F)	n/a	n/a
Apr	28.2 C (82.8 F)	-6.2 C (20.8 F)	n/a	n/a
May	29.2 C (84.6 F)	0.5 C (32.9 F)	n/a	n/a
Jun	32.5 C (90.5 F)	3.5 C (38.3 F)	n/a	n/a
Jul	33.9 C (93.0 F)	7.0 C (44.6 F)	n/a	n/a
Aug	35.5 C (95.9 F)	6.5 C (43.7 F)	n/a	n/a
Sep	29.5 C (85.1 F)	3.5 C (38.3 F)	n/a	n/a
Oct	23.2 C (73.8 F)	-0.9 C (30.4 F)	n/a	n/a
Nov	18.0 C (64.4 F)	-8.4 C (16.9 F)	n/a	n/a
Dec	13.8 C (56.8 F)	-16.0 C (3.2 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Plon (See) still stand. 1994 holds the most, with 53.

Standing records at Plon (See) by the year they were set
Year set	Standing records
1950	22
1951	25
1952	40
1953	33
1954	25
1955	34
1956	47
1957	35
1958	23
1959	26
1960	16
1961	28
1962	19
1963	31
1964	33
1965	34
1966	40
1967	18
1968	30
1969	35
1970	27
1971	32
1972	32
1973	33
1974	27
1975	33
1976	29
1977	19
1978	35
1979	32
1980	25
1981	34
1982	39
1983	32
1984	11
1985	34
1986	37
1987	41
1988	20
1989	37
1990	47
1991	21
1992	22
1993	44
1994	53
1995	31
1996	39
1997	4

All-Time Record Progression

7 new records

7 all-time records were set at Plon (See) between 9 January 1985 and 28 July 1994. Each dot is a new record.

When Plon (See) set new all-time records
Date	Kind	Detail
1985-01-09	Record low maximum temperature	Record low maximum temperature -10.5 C (13.1 F)
1987-07-17	Record daily precipitation	Record daily precipitation 72.1 mm (2.8 in)
1989-08-27	Record daily precipitation	Record daily precipitation 93.7 mm (3.7 in)
1992-07-21	Record high maximum temperature	Record high maximum temperature 33.9 C (93.0 F)
1992-08-09	Record high maximum temperature	Record high maximum temperature 35.5 C (95.9 F)
1994-07-25	Record high minimum temperature	Record high minimum temperature 21.5 C (70.7 F)
1994-07-28	Record high minimum temperature	Record high minimum temperature 22.5 C (72.5 F)

Wettest Day of Each Month

Aug: 93.7 mm (3.7 in)

The wettest day on record for each calendar month at Plon (See). The most was 93.7 mm (3.7 in) on 27 August 1989.

Record daily precipitation for each month at Plon (See)
Month	Record daily precipitation (mm)	Date
Jan	25.6 mm (1.0 in)	26 January 1995
Feb	20.0 mm (0.8 in)	8 February 1973
Mar	24.0 mm (0.9 in)	18 March 1978
Apr	31.3 mm (1.2 in)	10 April 1970
May	33.5 mm (1.3 in)	27 May 1951
Jun	46.8 mm (1.8 in)	24 June 1969
Jul	72.1 mm (2.8 in)	17 July 1987
Aug	93.7 mm (3.7 in)	27 August 1989
Sep	36.1 mm (1.4 in)	25 September 1991
Oct	27.0 mm (1.1 in)	23 October 1955
Nov	29.1 mm (1.1 in)	23 November 1984
Dec	32.9 mm (1.3 in)	14 December 1989

Period of Record Coverage

1950 to 1997

48 years of record at Plon (See), 1950 to 1997. 1 years have data for under 90 percent of days and are left out of rankings: 1997.

Days with data per year at Plon (See)
Year	Days with data	Share of year	Complete
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	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	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	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	31	8%	No

Latest Records

Latest records at Plon (See)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 January 1997	Plon (See), DE	daily low min	-15.5 C (4.1 F)	4.5 C (8.1 F)	26 years	21 of 100 (Routine)
2 January 1997	Plon (See), DE	daily low max	-8.8 C (16.2 F)	2.8 C (5.0 F)	34 years	21 of 100 (Routine)
2 January 1997	Plon (See), DE	daily low min	-16.5 C (2.3 F)	4.0 C (7.2 F)	18 years	17 of 100 (Routine)
1 January 1997	Plon (See), DE	daily low min	-14.5 C (5.9 F)	1.0 C (1.8 F)	18 years	11 of 100 (Routine)
29 December 1996	Plon (See), DE	daily low min	-9.0 C (15.8 F)	0.4 C (0.7 F)	35 years	15 of 100 (Routine)
28 December 1996	Plon (See), DE	daily low min	-11.0 C (12.2 F)	0.8 C (1.4 F)	35 years	16 of 100 (Routine)
28 December 1996	Plon (See), DE	daily low max	-6.0 C (21.2 F)	0.4 C (0.7 F)	35 years	15 of 100 (Routine)
26 November 1996	Plon (See), DE	daily snow depth	12.0 cm (4.7 in)	6.0 cm (2.4 in)	31 years	27 of 100 (Routine)
25 November 1996	Plon (See), DE	daily rain	11.1 mm (0.4 in)	0.2 mm (0.01 in)	22 years	10 of 100 (Routine)
18 November 1996	Plon (See), DE	daily rain	12.8 mm (0.5 in)	0.3 mm (0.01 in)	33 years	13 of 100 (Routine)
4 November 1996	Plon (See), DE	daily high min	11.6 C (52.9 F)	2.6 C (4.7 F)	25 years	19 of 100 (Routine)
4 November 1996	Plon (See), DE	daily high max	14.1 C (57.4 F)	0.3 C (0.5 F)	34 years	14 of 100 (Routine)
3 November 1996	Plon (See), DE	daily high min	12.4 C (54.3 F)	3.1 C (5.6 F)	27 years	21 of 100 (Routine)
16 October 1996	Plon (See), DE	daily rain	14.3 mm (0.6 in)	3.9 mm (0.15 in)	38 years	20 of 100 (Routine)
25 September 1996	Plon (See), DE	daily low max	10.5 C (50.9 F)	1.0 C (1.8 F)	6 years	8 of 100 (Routine)
7 September 1996	Plon (See), DE	daily low min	7.5 C (45.5 F)	0.3 C (0.5 F)	25 years	12 of 100 (Routine)
2 September 1996	Plon (See), DE	daily low min (Tie)	8.3 C (46.9 F)	tie	32 years	3 of 100 (Routine)
21 August 1996	Plon (See), DE	daily high max	30.0 C (86.0 F)	0.6 C (1.1 F)	1 year	5 of 100 (Routine)
21 August 1996	Plon (See), DE	daily high min (Tie)	17.5 C (63.5 F)	tie	41 years	4 of 100 (Routine)
31 July 1996	Plon (See), DE	daily rain	17.9 mm (0.7 in)	1.2 mm (0.05 in)	11 years	8 of 100 (Routine)

Climate Trend

47 complete years, 1950 to 1996

One stripe for each of 47 complete years at Plon (See), 1950 to 1996. Blue stripes are years cooler than the station's own mean of 8.6 C (47.5 F); red stripes are warmer. The coolest year was 1956, at 7.4 C (45.4 F), and the warmest was 1990, at 10.2 C (50.4 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Plon (See) as warming stripes, 1950 to 1996
Year	Annual mean temperature	Difference from the station mean
1950	8.6 C	-0.02 C
1951	8.7 C	+0.10 C
1952	7.9 C	-0.76 C
1953	9.5 C	+0.85 C
1954	8.0 C	-0.59 C
1955	8.0 C	-0.68 C
1956	7.4 C	-1.20 C
1957	9.0 C	+0.32 C
1958	8.3 C	-0.30 C
1959	9.6 C	+0.92 C
1960	8.7 C	+0.08 C
1961	9.3 C	+0.67 C
1962	7.6 C	-1.01 C
1963	7.4 C	-1.19 C
1964	8.2 C	-0.39 C
1965	7.9 C	-0.75 C
1966	8.5 C	-0.12 C
1967	9.4 C	+0.76 C
1968	8.8 C	+0.19 C
1969	8.0 C	-0.63 C
1970	7.7 C	-0.91 C
1971	9.0 C	+0.41 C
1972	8.6 C	-0.07 C
1973	9.0 C	+0.40 C
1974	9.3 C	+0.69 C
1975	9.6 C	+0.98 C
1976	8.7 C	+0.11 C
1977	8.9 C	+0.29 C
1978	8.3 C	-0.37 C
1979	7.5 C	-1.15 C
1980	8.0 C	-0.61 C
1981	8.6 C	-0.07 C
1982	9.2 C	+0.52 C
1983	9.5 C	+0.91 C
1984	8.5 C	-0.12 C
1985	7.7 C	-0.90 C
1986	8.0 C	-0.66 C
1987	7.5 C	-1.15 C
1988	9.4 C	+0.76 C
1989	10.0 C	+1.34 C
1990	10.2 C	+1.58 C
1991	8.9 C	+0.24 C
1992	9.8 C	+1.17 C
1993	8.5 C	-0.13 C
1994	9.6 C	+1.01 C
1995	9.2 C	+0.55 C
1996	7.5 C	-1.16 C

The fitted trend in annual mean temperature here over 1950 to 1996 is 0.13 C (-0.04 to 0.29) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.5) per decade. The slope is a straight line fitted to 47 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Plon (See)
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.13 C (-0.04 to 0.29) per decade	0.2 F (-0.1 to 0.5) per decade	1950 to 1996	47	Not clearly different from zero
Mean daily maximum	0.18 C (0.00 to 0.35) per decade	0.32 F (0.00 to 0.63) per decade	1950 to 1996	47	Rise
Mean daily minimum	0.1 C (-0.1 to 0.2) per decade	0.1 F (-0.1 to 0.4) per decade	1950 to 1996	47	Not clearly different from zero

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

1950 to 1997

Yearly extremes at Plon (See): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.5 C (95.9 F)	1992	30.4 C (86.6 F)	48
Coldest night (TNn)	-22.0 C (-7.6 F)	1956	-11.9 C (10.5 F)	48
Wettest day (Rx1day)	93.7 mm (3.7 in)	1989	30.3 mm (1.2 in)	48
Wettest five days (Rx5day)	143.4 mm (5.6 in)	1989	56.7 mm (2.2 in)	48
Longest dry spell (CDD)	35 days	1983	21 days	48

Hottest day (TXx)

The hottest day of the year at Plon (See), 1950 to 1997. The record is 35.5 C (95.9 F) in 1992, marked on the chart; the median year is 30.4 C (86.6 F).

Hottest day (TXx) at Plon (See) by year
Year	Hottest day (TXx)
1950	27.9 C (82.2 F)
1951	27.2 C (81.0 F)
1952	31.0 C (87.8 F)
1953	29.7 C (85.5 F)
1954	30.9 C (87.6 F)
1955	28.0 C (82.4 F)
1956	26.1 C (79.0 F)
1957	31.5 C (88.7 F)
1958	26.5 C (79.7 F)
1959	32.4 C (90.3 F)
1960	28.0 C (82.4 F)
1961	31.2 C (88.2 F)
1962	27.0 C (80.6 F)
1963	32.6 C (90.7 F)
1964	30.7 C (87.3 F)
1965	25.5 C (77.9 F)
1966	30.9 C (87.6 F)
1967	27.2 C (81.0 F)
1968	31.6 C (88.9 F)
1969	30.7 C (87.3 F)
1970	29.0 C (84.2 F)
1971	30.0 C (86.0 F)
1972	31.0 C (87.8 F)
1973	31.6 C (88.9 F)
1974	29.0 C (84.2 F)
1975	33.0 C (91.4 F)
1976	31.2 C (88.2 F)
1977	28.0 C (82.4 F)
1978	30.0 C (86.0 F)
1979	30.5 C (86.9 F)
1980	27.5 C (81.5 F)
1981	29.5 C (85.1 F)
1982	31.3 C (88.3 F)
1983	30.6 C (87.1 F)
1984	29.0 C (84.2 F)
1985	29.2 C (84.6 F)
1986	31.0 C (87.8 F)
1987	29.0 C (84.2 F)
1988	28.0 C (82.4 F)
1989	33.0 C (91.4 F)
1990	32.5 C (90.5 F)
1991	30.2 C (86.4 F)
1992	35.5 C (95.9 F)
1993	28.0 C (82.4 F)
1994	33.8 C (92.8 F)
1995	31.8 C (89.2 F)
1996	32.5 C (90.5 F)
1997	5.6 C (42.1 F)

Coldest night (TNn)

The coldest night of the year at Plon (See), 1950 to 1997. The record is -22.0 C (-7.6 F) in 1956, marked on the chart; the median year is -11.9 C (10.5 F).

Coldest night (TNn) at Plon (See) by year
Year	Coldest night (TNn)
1950	-9.3 C (15.3 F)
1951	-9.4 C (15.1 F)
1952	-7.8 C (18.0 F)
1953	-12.6 C (9.3 F)
1954	-17.2 C (1.0 F)
1955	-14.6 C (5.7 F)
1956	-22.0 C (-7.6 F)
1957	-11.9 C (10.6 F)
1958	-10.1 C (13.8 F)
1959	-11.8 C (10.8 F)
1960	-10.0 C (14.0 F)
1961	-14.4 C (6.1 F)
1962	-9.4 C (15.1 F)
1963	-20.3 C (-4.5 F)
1964	-10.8 C (12.6 F)
1965	-8.5 C (16.7 F)
1966	-11.8 C (10.8 F)
1967	-9.5 C (14.9 F)
1968	-15.4 C (4.3 F)
1969	-16.0 C (3.2 F)
1970	-16.0 C (3.2 F)
1971	-12.4 C (9.7 F)
1972	-19.3 C (-2.7 F)
1973	-7.5 C (18.5 F)
1974	-3.0 C (26.6 F)
1975	-5.5 C (22.1 F)
1976	-13.5 C (7.7 F)
1977	-6.5 C (20.3 F)
1978	-18.5 C (-1.3 F)
1979	-15.9 C (3.4 F)
1980	-11.5 C (11.3 F)
1981	-16.0 C (3.2 F)
1982	-20.0 C (-4.0 F)
1983	-9.2 C (15.4 F)
1984	-7.2 C (19.0 F)
1985	-16.5 C (2.3 F)
1986	-20.7 C (-5.3 F)
1987	-14.0 C (6.8 F)
1988	-5.5 C (22.1 F)
1989	-4.5 C (23.9 F)
1990	-3.5 C (25.7 F)
1991	-10.0 C (14.0 F)
1992	-7.0 C (19.4 F)
1993	-12.0 C (10.4 F)
1994	-17.0 C (1.4 F)
1995	-15.0 C (5.0 F)
1996	-16.7 C (1.9 F)
1997	-16.5 C (2.3 F)

Wettest day (Rx1day)

The wettest day of the year at Plon (See), 1950 to 1997. The record is 93.7 mm (3.7 in) in 1989, marked on the chart; the median year is 30.3 mm (1.2 in).

Wettest day (Rx1day) at Plon (See) by year
Year	Wettest day (Rx1day)
1950	24.9 mm (1.0 in)
1951	42.7 mm (1.7 in)
1952	18.8 mm (0.7 in)
1953	34.6 mm (1.4 in)
1954	63.1 mm (2.5 in)
1955	35.2 mm (1.4 in)
1956	41.9 mm (1.6 in)
1957	32.6 mm (1.3 in)
1958	18.3 mm (0.7 in)
1959	54.4 mm (2.1 in)
1960	43.2 mm (1.7 in)
1961	25.8 mm (1.0 in)
1962	29.5 mm (1.2 in)
1963	39.0 mm (1.5 in)
1964	36.2 mm (1.4 in)
1965	34.2 mm (1.3 in)
1966	24.1 mm (0.9 in)
1967	48.0 mm (1.9 in)
1968	25.5 mm (1.0 in)
1969	46.8 mm (1.8 in)
1970	31.3 mm (1.2 in)
1971	57.1 mm (2.2 in)
1972	22.0 mm (0.9 in)
1973	32.7 mm (1.3 in)
1974	24.6 mm (1.0 in)
1975	22.6 mm (0.9 in)
1976	19.8 mm (0.8 in)
1977	22.6 mm (0.9 in)
1978	24.0 mm (0.9 in)
1979	28.0 mm (1.1 in)
1980	31.2 mm (1.2 in)
1981	34.5 mm (1.4 in)
1982	20.9 mm (0.8 in)
1983	21.9 mm (0.9 in)
1984	40.2 mm (1.6 in)
1985	24.3 mm (1.0 in)
1986	45.8 mm (1.8 in)
1987	72.1 mm (2.8 in)
1988	24.1 mm (0.9 in)
1989	93.7 mm (3.7 in)
1990	26.2 mm (1.0 in)
1991	45.1 mm (1.8 in)
1992	20.4 mm (0.8 in)
1993	30.8 mm (1.2 in)
1994	29.7 mm (1.2 in)
1995	27.3 mm (1.1 in)
1996	28.7 mm (1.1 in)
1997	2.0 mm (0.08 in)

Wettest five days (Rx5day)

The wettest five days of the year at Plon (See), 1950 to 1997. The record is 143.4 mm (5.6 in) in 1989, marked on the chart; the median year is 56.7 mm (2.2 in).

Wettest five days (Rx5day) at Plon (See) by year
Year	Wettest five days (Rx5day)
1950	42.9 mm (1.7 in)
1951	52.9 mm (2.1 in)
1952	38.0 mm (1.5 in)
1953	42.8 mm (1.7 in)
1954	99.6 mm (3.9 in)
1955	64.4 mm (2.5 in)
1956	63.8 mm (2.5 in)
1957	51.6 mm (2.0 in)
1958	54.0 mm (2.1 in)
1959	122.3 mm (4.8 in)
1960	82.8 mm (3.3 in)
1961	55.5 mm (2.2 in)
1962	52.6 mm (2.1 in)
1963	70.0 mm (2.8 in)
1964	56.8 mm (2.2 in)
1965	61.5 mm (2.4 in)
1966	56.5 mm (2.2 in)
1967	63.5 mm (2.5 in)
1968	51.4 mm (2.0 in)
1969	54.7 mm (2.2 in)
1970	52.0 mm (2.0 in)
1971	81.2 mm (3.2 in)
1972	40.6 mm (1.6 in)
1973	59.1 mm (2.3 in)
1974	42.8 mm (1.7 in)
1975	46.2 mm (1.8 in)
1976	64.1 mm (2.5 in)
1977	61.2 mm (2.4 in)
1978	65.3 mm (2.6 in)
1979	54.4 mm (2.1 in)
1980	54.0 mm (2.1 in)
1981	65.5 mm (2.6 in)
1982	42.0 mm (1.7 in)
1983	55.6 mm (2.2 in)
1984	71.9 mm (2.8 in)
1985	41.7 mm (1.6 in)
1986	66.2 mm (2.6 in)
1987	107.2 mm (4.2 in)
1988	52.2 mm (2.1 in)
1989	143.4 mm (5.6 in)
1990	65.9 mm (2.6 in)
1991	83.2 mm (3.3 in)
1992	37.2 mm (1.5 in)
1993	86.5 mm (3.4 in)
1994	60.8 mm (2.4 in)
1995	61.0 mm (2.4 in)
1996	38.8 mm (1.5 in)
1997	3.2 mm (0.13 in)

Longest dry spell (CDD)

The longest dry spell of the year at Plon (See), 1950 to 1997. The record is 35 days in 1983, marked on the chart; the median year is 21 days.

Longest dry spell (CDD) at Plon (See) by year
Year	Longest dry spell (CDD)
1950	16 days
1951	33 days
1952	25 days
1953	19 days
1954	26 days
1955	21 days
1956	15 days
1957	14 days
1958	21 days
1959	27 days
1960	34 days
1961	18 days
1962	18 days
1963	22 days
1964	18 days
1965	16 days
1966	11 days
1967	16 days
1968	18 days
1969	22 days
1970	22 days
1971	15 days
1972	23 days
1973	25 days
1974	22 days
1975	25 days
1976	22 days
1977	19 days
1978	21 days
1979	16 days
1980	22 days
1981	16 days
1982	23 days
1983	35 days
1984	23 days
1985	20 days
1986	23 days
1987	20 days
1988	15 days
1989	20 days
1990	17 days
1991	24 days
1992	27 days
1993	29 days
1994	20 days
1995	32 days
1996	32 days
1997	12 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

47 years with a frost

Across 47 years with a frost, the median last spring frost at Plon (See) falls on 14 April and the median first autumn frost on 12 November, which leaves a median of 214 days between them.

Fitted over all years, the growing season changes by -3.5 days per decade at this station.

Frost dates and growing season at Plon (See)
Measure	Median, all years	Earliest period	Recent period (1967 to 1996)	Recent against earliest	Fitted trend
Last spring frost	14 April	n/a	14 April	n/a	+1.2 days per decade
First autumn frost	12 November	n/a	12 November	n/a	-2.3 days per decade
Growing days	214 days	n/a	210 days	n/a	-3.5 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

47 years, 1950 to 1996

A day with at least 30.3 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 96.4 mm (3.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Plon (See): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	30.3 mm (1.2 in)
5 years	42.2 mm (1.7 in)
10 years	51.9 mm (2.0 in)
25 years	67.0 mm (2.6 in)
50 years	80.5 mm (3.2 in)	Longer than the 47 years of record
100 years	96.4 mm (3.8 in)	Longer than the 47 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, 47 years of values from 1950 to 1996.

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: 93.7 mm (3.7 in) in 1989; 72.1 mm (2.8 in) in 1987; 63.1 mm (2.5 in) in 1954.

Station Changes

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

Download the Data

Data for Plon (See) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Plon (See) 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).