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
Record highRecord low2026 daily maximum2026 daily minimum
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
Year with most
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.
When Vernonia set new all-time records
Date
Kind
Detail
1965-12-31
Record daily precipitation
Record daily precipitation 128.8 mm (5.1 in)
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
Complete yearUnder 90 percent of days
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.
Cooler than the station meanWarmer than the station mean
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.