Vernonia Weather Records (USC00358879)

Record envelope, standing records and threshold days for Vernonia (USC00358879), Oregon, United States, with 75 years of record.

Key Facts for Vernonia

Vernonia (USC00358879) is a weather station in Oregon, United States at 45.87 latitude and -123.20 longitude, 256 m (840 ft) above sea level.
The station reports from 1893 to 1967, 75 years of record.
1,464 records set at Vernonia still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Vernonia tied a daily record low minimum temperature of 4.4 C (39.9 F) on 14 July 1967.

About the Station

Location: Oregon, United States, 45.87 latitude, -123.20 longitude.
Elevation: 256 m (840 ft).
Period of record: 1893 to 1967, 75 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 Vernonia. 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 Vernonia, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	17.2 C (63.0 F)	-21.1 C (-6.0 F)	n/a	n/a
Feb	21.1 C (70.0 F)	-17.8 C (0.0 F)	n/a	n/a
Mar	35.0 C (95.0 F)	-12.8 C (9.0 F)	n/a	n/a
Apr	37.8 C (100.0 F)	-6.1 C (21.0 F)	n/a	n/a
May	41.1 C (106.0 F)	-3.9 C (25.0 F)	n/a	n/a
Jun	36.1 C (97.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	41.7 C (107.1 F)	0.6 C (33.1 F)	n/a	n/a
Aug	40.6 C (105.1 F)	0.0 C (32.0 F)	n/a	n/a
Sep	41.1 C (106.0 F)	-3.3 C (26.1 F)	n/a	n/a
Oct	33.9 C (93.0 F)	-6.1 C (21.0 F)	n/a	n/a
Nov	23.3 C (73.9 F)	-14.4 C (6.1 F)	n/a	n/a
Dec	18.3 C (64.9 F)	-16.7 C (1.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Vernonia still stand. 1939 holds the most, with 76.

Standing records at Vernonia by the year they were set
Year set	Standing records
1893	8
1896	21
1897	69
1898	55
1899	59
1900	29
1901	1
1938	63
1939	76
1940	49
1941	56
1942	37
1943	48
1944	36
1945	32
1946	34
1947	34
1948	43
1949	67
1950	50
1951	39
1952	53
1953	32
1954	27
1955	43
1956	46
1957	45
1958	42
1959	35
1960	27
1961	41
1962	43
1963	26
1964	29
1965	36
1966	24
1967	9

All-Time Record Progression

1 new records

1 all-time records were set at Vernonia between 31 December 1965 and 31 December 1965. Each dot is a new record.

Wettest Day of Each Month

Dec: 128.8 mm (5.1 in)

The wettest day on record for each calendar month at Vernonia. The most was 128.8 mm (5.1 in) on 31 December 1965.

Record daily precipitation for each month at Vernonia
Month	Record daily precipitation (mm)	Date
Jan	67.8 mm (2.7 in)	13 January 1894
Feb	73.9 mm (2.9 in)	10 February 1949
Mar	54.1 mm (2.1 in)	7 March 1894
Apr	46.2 mm (1.8 in)	27 April 1962
May	28.2 mm (1.1 in)	1 May 1949
Jun	45.7 mm (1.8 in)	6 June 1958
Jul	16.0 mm (0.6 in)	8 July 1893
Aug	25.1 mm (1.0 in)	30 August 1954
Sep	49.5 mm (1.9 in)	22 September 1898
Oct	65.0 mm (2.6 in)	7 October 1893
Nov	79.0 mm (3.1 in)	18 November 1946
Dec	128.8 mm (5.1 in)	31 December 1965

Period of Record Coverage

1893 to 1967

37 years of record at Vernonia, 1893 to 1967. 11 years have data for under 90 percent of days and are left out of rankings: 1893, 1896, 1898, 1900, 1901, 1938, 1943, 1950 and others.

Days with data per year at Vernonia
Year	Days with data	Share of year	Complete
1893	31	8%	No
1896	91	25%	No
1897	361	99%	Yes
1898	303	83%	No
1899	363	99%	Yes
1900	243	67%	No
1901	20	5%	No
1938	244	67%	No
1939	361	99%	Yes
1940	365	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	317	87%	No
1944	363	99%	Yes
1945	360	99%	Yes
1946	365	100%	Yes
1947	359	98%	Yes
1948	360	98%	Yes
1949	359	98%	Yes
1950	328	90%	No
1951	347	95%	Yes
1952	343	94%	Yes
1953	357	98%	Yes
1954	345	95%	Yes
1955	270	74%	No
1956	366	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	350	96%	Yes
1961	355	97%	Yes
1962	356	98%	Yes
1963	361	99%	Yes
1964	332	91%	Yes
1965	328	90%	No
1966	362	99%	Yes
1967	200	55%	No

Latest Records

Latest records at Vernonia
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
14 July 1967	Vernonia, US	daily low min (Tie)	4.4 C (39.9 F)	tie	66 years	6 of 100 (Routine)
2 June 1967	Vernonia, US	daily high min	11.7 C (53.1 F)	0.6 C (1.1 F)	20 years	14 of 100 (Routine)
30 May 1967	Vernonia, US	daily rain	8.1 mm (0.32 in)	1.0 mm (0.04 in)	12 years	11 of 100 (Routine)
25 May 1967	Vernonia, US	daily low min (Tie)	-1.7 C (28.9 F)	tie	2 years	1 of 100 (Routine)
9 May 1967	Vernonia, US	daily low max (Tie)	11.1 C (52.0 F)	tie	22 years	3 of 100 (Routine)
29 April 1967	Vernonia, US	daily low max (Tie)	10.0 C (50.0 F)	tie	67 years	6 of 100 (Routine)
18 April 1967	Vernonia, US	daily rain	13.5 mm (0.5 in)	0.5 mm (0.02 in)	67 years	20 of 100 (Routine)
16 April 1967	Vernonia, US	daily low max	8.9 C (48.0 F)	1.1 C (2.0 F)	4 years	10 of 100 (Routine)
15 April 1967	Vernonia, US	daily low min	-2.8 C (27.0 F)	0.6 C (1.1 F)	12 years	11 of 100 (Routine)
14 April 1967	Vernonia, US	daily low max	8.9 C (48.0 F)	0.5 C (0.9 F)	16 years	12 of 100 (Routine)
29 March 1967	Vernonia, US	daily low max	6.1 C (43.0 F)	1.1 C (2.0 F)	17 years	14 of 100 (Routine)
28 March 1967	Vernonia, US	daily low max	5.6 C (42.1 F)	0.5 C (0.9 F)	12 years	11 of 100 (Routine)
28 January 1967	Vernonia, US	daily high min	7.8 C (46.0 F)	1.7 C (3.1 F)	1 year	10 of 100 (Routine)
27 January 1967	Vernonia, US	daily high min	8.3 C (46.9 F)	2.2 C (4.0 F)	8 years	13 of 100 (Routine)
14 January 1967	Vernonia, US	daily high min	6.7 C (44.1 F)	1.1 C (2.0 F)	5 years	10 of 100 (Routine)
13 January 1967	Vernonia, US	daily high min (Tie)	5.6 C (42.1 F)	tie	21 years	3 of 100 (Routine)
21 December 1966	Vernonia, US	daily low max (Tie)	2.8 C (37.0 F)	tie	17 years	3 of 100 (Routine)
13 December 1966	Vernonia, US	daily high min (Tie)	7.2 C (45.0 F)	tie	20 years	3 of 100 (Routine)
4 December 1966	Vernonia, US	daily rain	50.8 mm (2.0 in)	11.4 mm (0.4 in)	15 years	20 of 100 (Routine)
2 December 1966	Vernonia, US	daily rain	50.8 mm (2.0 in)	15.7 mm (0.6 in)	23 years	25 of 100 (Routine)

Climate Trend

25 complete years, 1897 to 1966

One stripe for each of 25 complete years at Vernonia, 1897 to 1966. Blue stripes are years cooler than the station's own mean of 9.7 C (49.4 F); red stripes are warmer. The coolest year was 1948, at 8.1 C (46.6 F), and the warmest was 1958, at 11.2 C (52.1 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Vernonia as warming stripes, 1897 to 1966
Year	Annual mean temperature	Difference from the station mean
1897	10.6 C	+0.94 C
1899	10.1 C	+0.40 C
1939	10.8 C	+1.15 C
1940	10.8 C	+1.10 C
1941	10.6 C	+0.93 C
1942	9.9 C	+0.18 C
1944	9.5 C	-0.23 C
1945	9.4 C	-0.25 C
1946	9.0 C	-0.69 C
1947	9.9 C	+0.18 C
1948	8.1 C	-1.57 C
1949	8.9 C	-0.74 C
1951	9.2 C	-0.47 C
1952	9.3 C	-0.43 C
1953	9.7 C	0.00 C
1954	9.1 C	-0.55 C
1956	9.5 C	-0.21 C
1957	9.5 C	-0.15 C
1958	11.2 C	+1.49 C
1959	9.6 C	-0.11 C
1960	9.4 C	-0.30 C
1961	10.0 C	+0.30 C
1962	9.3 C	-0.34 C
1963	9.4 C	-0.25 C
1966	9.4 C	-0.28 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1893 to 1967

Yearly extremes at Vernonia: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.7 C (107.1 F)	1899	35.0 C (95.0 F)	37
Coldest night (TNn)	-21.1 C (-6.0 F)	1950	-11.1 C (12.0 F)	36
Wettest day (Rx1day)	128.8 mm (5.1 in)	1965	46.8 mm (1.8 in)	38
Wettest five days (Rx5day)	246.9 mm (9.7 in)	1966	117.8 mm (4.6 in)	38
Longest dry spell (CDD)	72 days	1945	31 days	38

Hottest day (TXx)

The hottest day of the year at Vernonia, 1893 to 1967. The record is 41.7 C (107.1 F) in 1899, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Vernonia by year
Year	Hottest day (TXx)
1893	3.9 C (39.0 F)
1894	n/a
1896	25.0 C (77.0 F)
1897	41.1 C (106.0 F)
1898	40.6 C (105.1 F)
1899	41.7 C (107.1 F)
1900	36.7 C (98.1 F)
1901	32.8 C (91.0 F)
1938	41.1 C (106.0 F)
1939	40.0 C (104.0 F)
1940	35.0 C (95.0 F)
1941	38.9 C (102.0 F)
1942	39.4 C (102.9 F)
1943	32.8 C (91.0 F)
1944	37.8 C (100.0 F)
1945	34.4 C (93.9 F)
1946	38.3 C (100.9 F)
1947	32.8 C (91.0 F)
1948	35.0 C (95.0 F)
1949	33.9 C (93.0 F)
1950	34.4 C (93.9 F)
1951	35.0 C (95.0 F)
1952	37.8 C (100.0 F)
1953	33.9 C (93.0 F)
1954	29.4 C (84.9 F)
1955	37.2 C (99.0 F)
1956	39.4 C (102.9 F)
1957	33.3 C (91.9 F)
1958	38.3 C (100.9 F)
1959	34.4 C (93.9 F)
1960	36.1 C (97.0 F)
1961	38.3 C (100.9 F)
1962	33.9 C (93.0 F)
1963	33.9 C (93.0 F)
1964	32.8 C (91.0 F)
1965	36.7 C (98.1 F)
1966	32.8 C (91.0 F)
1967	34.4 C (93.9 F)

Coldest night (TNn)

The coldest night of the year at Vernonia, 1893 to 1967. The record is -21.1 C (-6.0 F) in 1950, marked on the chart; the median year is -11.1 C (12.0 F).

Coldest night (TNn) at Vernonia by year
Year	Coldest night (TNn)
1893	n/a
1894	n/a
1896	-14.4 C (6.1 F)
1897	-11.7 C (10.9 F)
1898	-10.6 C (12.9 F)
1899	-16.1 C (3.0 F)
1900	-7.8 C (18.0 F)
1901	-1.1 C (30.0 F)
1938	-11.1 C (12.0 F)
1939	-6.7 C (19.9 F)
1940	-10.6 C (12.9 F)
1941	-6.7 C (19.9 F)
1942	-12.2 C (10.0 F)
1943	-17.2 C (1.0 F)
1944	-7.8 C (18.0 F)
1945	-8.9 C (16.0 F)
1946	-11.1 C (12.0 F)
1947	-14.4 C (6.1 F)
1948	-12.8 C (9.0 F)
1949	-20.6 C (-5.1 F)
1950	-21.1 C (-6.0 F)
1951	-14.4 C (6.1 F)
1952	-11.1 C (12.0 F)
1953	-6.1 C (21.0 F)
1954	-7.2 C (19.0 F)
1955	-12.8 C (9.0 F)
1956	-16.7 C (1.9 F)
1957	-17.8 C (0.0 F)
1958	-7.8 C (18.0 F)
1959	-13.9 C (7.0 F)
1960	-11.1 C (12.0 F)
1961	-10.0 C (14.0 F)
1962	-18.3 C (-0.9 F)
1963	-16.1 C (3.0 F)
1964	-16.7 C (1.9 F)
1965	-9.4 C (15.1 F)
1966	-6.1 C (21.0 F)
1967	-6.1 C (21.0 F)

Wettest day (Rx1day)

The wettest day of the year at Vernonia, 1893 to 1967. The record is 128.8 mm (5.1 in) in 1965, marked on the chart; the median year is 46.8 mm (1.8 in).

Wettest day (Rx1day) at Vernonia by year
Year	Wettest day (Rx1day)
1893	77.0 mm (3.0 in)
1894	67.8 mm (2.7 in)
1896	55.1 mm (2.2 in)
1897	74.9 mm (2.9 in)
1898	49.5 mm (1.9 in)
1899	40.1 mm (1.6 in)
1900	86.4 mm (3.4 in)
1901	19.1 mm (0.8 in)
1938	33.5 mm (1.3 in)
1939	44.7 mm (1.8 in)
1940	41.9 mm (1.6 in)
1941	37.6 mm (1.5 in)
1942	48.3 mm (1.9 in)
1943	43.4 mm (1.7 in)
1944	47.8 mm (1.9 in)
1945	52.1 mm (2.1 in)
1946	79.0 mm (3.1 in)
1947	40.6 mm (1.6 in)
1948	39.9 mm (1.6 in)
1949	73.9 mm (2.9 in)
1950	57.9 mm (2.3 in)
1951	48.3 mm (1.9 in)
1952	45.7 mm (1.8 in)
1953	45.7 mm (1.8 in)
1954	64.5 mm (2.5 in)
1955	33.0 mm (1.3 in)
1956	33.3 mm (1.3 in)
1957	41.4 mm (1.6 in)
1958	45.7 mm (1.8 in)
1959	42.4 mm (1.7 in)
1960	64.0 mm (2.5 in)
1961	42.7 mm (1.7 in)
1962	50.8 mm (2.0 in)
1963	41.9 mm (1.6 in)
1964	49.0 mm (1.9 in)
1965	128.8 mm (5.1 in)
1966	50.8 mm (2.0 in)
1967	43.9 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Vernonia, 1893 to 1967. The record is 246.9 mm (9.7 in) in 1966, marked on the chart; the median year is 117.8 mm (4.6 in).

Wettest five days (Rx5day) at Vernonia by year
Year	Wettest five days (Rx5day)
1893	146.1 mm (5.8 in)
1894	157.5 mm (6.2 in)
1896	119.7 mm (4.7 in)
1897	153.7 mm (6.1 in)
1898	106.2 mm (4.2 in)
1899	122.0 mm (4.8 in)
1900	85.4 mm (3.4 in)
1901	35.9 mm (1.4 in)
1938	67.3 mm (2.6 in)
1939	118.0 mm (4.6 in)
1940	113.5 mm (4.5 in)
1941	127.8 mm (5.0 in)
1942	108.8 mm (4.3 in)
1943	136.4 mm (5.4 in)
1944	92.8 mm (3.7 in)
1945	110.5 mm (4.4 in)
1946	127.2 mm (5.0 in)
1947	133.5 mm (5.3 in)
1948	115.9 mm (4.6 in)
1949	132.9 mm (5.2 in)
1950	112.0 mm (4.4 in)
1951	110.3 mm (4.3 in)
1952	82.7 mm (3.3 in)
1953	121.5 mm (4.8 in)
1954	146.1 mm (5.8 in)
1955	70.2 mm (2.8 in)
1956	117.6 mm (4.6 in)
1957	104.4 mm (4.1 in)
1958	97.6 mm (3.8 in)
1959	119.1 mm (4.7 in)
1960	156.7 mm (6.2 in)
1961	106.7 mm (4.2 in)
1962	104.4 mm (4.1 in)
1963	129.3 mm (5.1 in)
1964	148.0 mm (5.8 in)
1965	244.9 mm (9.6 in)
1966	246.9 mm (9.7 in)
1967	89.2 mm (3.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Vernonia, 1893 to 1967. The record is 72 days in 1945, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Vernonia by year
Year	Longest dry spell (CDD)
1893	31 days
1894	30 days
1896	9 days
1897	30 days
1898	26 days
1899	43 days
1900	36 days
1901	15 days
1938	42 days
1939	36 days
1940	42 days
1941	35 days
1942	20 days
1943	33 days
1944	30 days
1945	72 days
1946	22 days
1947	15 days
1948	21 days
1949	28 days
1950	31 days
1951	53 days
1952	41 days
1953	19 days
1954	24 days
1955	48 days
1956	27 days
1957	38 days
1958	33 days
1959	40 days
1960	56 days
1961	38 days
1962	49 days
1963	19 days
1964	15 days
1965	27 days
1966	35 days
1967	29 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

25 years with a frost

Across 25 years with a frost, the median last spring frost at Vernonia falls on 15 May and the median first autumn frost on 30 September, which leaves a median of 138 days between them.

Fitted over all years, the growing season changes by -2.9 days per decade at this station.

Frost dates and growing season at Vernonia
Measure	Median, all years	Earliest period	Recent period (1897 to 1966)	Recent against earliest	Fitted trend
Last spring frost	15 May	n/a	15 May	n/a	+1.0 days per decade
First autumn frost	30 September	n/a	30 September	n/a	-1.9 days per decade
Growing days	138 days	n/a	138 days	n/a	-2.9 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

31 years, 1893 to 1966

A day with at least 47.2 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 137.4 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Vernonia: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	47.2 mm (1.9 in)
5 years	59.6 mm (2.3 in)
10 years	71.2 mm (2.8 in)
25 years	91.3 mm (3.6 in)
50 years	111.5 mm (4.4 in)	Longer than the 31 years of record
100 years	137.4 mm (5.4 in)	Longer than the 31 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, 31 years of values from 1893 to 1966.

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: 128.8 mm (5.1 in) in 1965; 79.0 mm (3.1 in) in 1946; 77.0 mm (3.0 in) in 1893.

Download the Data

Data for Vernonia standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Vernonia 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).