Record envelope, standing records and threshold days for Hanford A E C (USC00453444), Washington, United States, with 33 years of record.
Key Facts for Hanford A E C
Hanford A E C (USC00453444) is a weather station in Washington, United States at 46.57 latitude and -119.58 longitude, 220 m (722 ft) above sea level.
The station reports from 1912 to 1944, 33 years of record.
1,464 records set at Hanford A E C still stand.
Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
Hanford A E C tied a daily record low minimum temperature of 1.1 C (34.0 F) on 9 May 1944.
About the Station
Location: Washington, United States, 46.57 latitude, -119.58 longitude.
Elevation: 220 m (722 ft).
Period of record: 1912 to 1944, 33 years.
Eligible elements: tmax, tmin.
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 Hanford A E C. 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 Hanford A E C, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
18.3 C (64.9 F)
-30.6 C (-23.1 F)
n/a
n/a
Feb
21.7 C (71.1 F)
-28.3 C (-18.9 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-11.1 C (12.0 F)
n/a
n/a
Apr
35.0 C (95.0 F)
-11.1 C (12.0 F)
n/a
n/a
May
39.4 C (102.9 F)
-2.2 C (28.0 F)
n/a
n/a
Jun
43.3 C (109.9 F)
0.6 C (33.1 F)
n/a
n/a
Jul
46.1 C (115.0 F)
5.0 C (41.0 F)
n/a
n/a
Aug
43.3 C (109.9 F)
4.4 C (39.9 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-14.4 C (6.1 F)
n/a
n/a
Nov
22.8 C (73.0 F)
-17.8 C (0.0 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Hanford A E C still stand. 1924 holds the most, with 67.
Standing records at Hanford A E C by the year they were set
Year set
Standing records
1912
35
1913
62
1914
51
1915
34
1916
66
1917
48
1918
63
1919
58
1920
34
1921
33
1922
57
1923
46
1924
67
1925
43
1926
40
1927
45
1928
30
1929
43
1930
67
1931
35
1932
43
1933
62
1934
53
1935
49
1936
46
1937
40
1938
44
1939
47
1940
34
1941
25
1942
38
1943
11
1944
15
Wettest Day of Each Month
May: 38.1 mm (1.5 in)
The wettest day on record for each calendar month at Hanford A E C. The most was 38.1 mm (1.5 in) on 29 May 1934.
Record daily precipitation for each month at Hanford A E C
Month
Record daily precipitation (mm)
Date
Jan
21.6 mm (0.9 in)
3 January 1917
Feb
22.4 mm (0.9 in)
13 February 1921
Mar
9.9 mm (0.39 in)
17 March 1931
Apr
15.2 mm (0.6 in)
12 April 1921
May
38.1 mm (1.5 in)
29 May 1934
Jun
31.8 mm (1.3 in)
25 June 1942
Jul
9.1 mm (0.36 in)
19 July 1924
Aug
11.4 mm (0.4 in)
2 August 1934
Sep
17.8 mm (0.7 in)
7 September 1924
Oct
16.0 mm (0.6 in)
1 October 1914
Nov
18.0 mm (0.7 in)
11 November 1915
Dec
20.3 mm (0.8 in)
20 December 1940
Period of Record Coverage
1912 to 1944
Complete yearUnder 90 percent of days
33 years of record at Hanford A E C, 1912 to 1944. 7 years have data for under 90 percent of days and are left out of rankings: 1912, 1916, 1933, 1936, 1937, 1943, 1944.
Cooler than the station meanWarmer than the station mean
One stripe for each of 22 complete years at Hanford A E C, 1913 to 1940. Blue stripes are years cooler than the station's own mean of 11.7 C (53.0 F); red stripes are warmer. The coolest year was 1929, at 10.2 C (50.3 F), and the warmest was 1925, at 12.7 C (54.9 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Hanford A E C as warming stripes, 1913 to 1940
Year
Annual mean temperature
Difference from the station mean
1913
10.9 C
-0.81 C
1914
11.3 C
-0.39 C
1915
11.4 C
-0.25 C
1918
12.4 C
+0.74 C
1919
10.9 C
-0.83 C
1920
11.4 C
-0.25 C
1921
12.1 C
+0.43 C
1922
10.9 C
-0.81 C
1923
12.2 C
+0.54 C
1924
11.9 C
+0.24 C
1925
12.7 C
+1.01 C
1926
12.5 C
+0.84 C
1927
11.3 C
-0.43 C
1928
11.7 C
+0.05 C
1929
10.2 C
-1.51 C
1930
11.2 C
-0.50 C
1931
12.1 C
+0.43 C
1932
11.6 C
-0.11 C
1935
10.9 C
-0.78 C
1938
12.2 C
+0.50 C
1939
12.5 C
+0.79 C
1940
12.7 C
+1.00 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
1912 to 1944
Yearly extremes at Hanford A E C: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.1 C (115.0 F)
1939
41.7 C (107.1 F)
33
Coldest night (TNn)
-32.8 C (-27.0 F)
1919
-19.4 C (-2.9 F)
33
Wettest day (Rx1day)
38.1 mm (1.5 in)
1934
15.2 mm (0.6 in)
33
Wettest five days (Rx5day)
45.2 mm (1.8 in)
1938
20.3 mm (0.8 in)
33
Longest dry spell (CDD)
103 days
1913
59 days
33
Hottest day (TXx)
The hottest day of the year at Hanford A E C, 1912 to 1944. The record is 46.1 C (115.0 F) in 1939, marked on the chart; the median year is 41.7 C (107.1 F).
Hottest day (TXx) at Hanford A E C by year
Year
Hottest day (TXx)
1912
43.3 C (109.9 F)
1913
43.3 C (109.9 F)
1914
41.1 C (106.0 F)
1915
41.7 C (107.1 F)
1916
38.9 C (102.0 F)
1917
40.0 C (104.0 F)
1918
41.7 C (107.1 F)
1919
42.2 C (108.0 F)
1920
41.7 C (107.1 F)
1921
39.4 C (102.9 F)
1922
43.9 C (111.0 F)
1923
40.6 C (105.1 F)
1924
42.2 C (108.0 F)
1925
41.1 C (106.0 F)
1926
42.2 C (108.0 F)
1927
40.6 C (105.1 F)
1928
43.3 C (109.9 F)
1929
40.0 C (104.0 F)
1930
42.2 C (108.0 F)
1931
43.3 C (109.9 F)
1932
40.6 C (105.1 F)
1933
41.1 C (106.0 F)
1934
42.2 C (108.0 F)
1935
42.2 C (108.0 F)
1936
41.7 C (107.1 F)
1937
42.2 C (108.0 F)
1938
45.6 C (114.1 F)
1939
46.1 C (115.0 F)
1940
41.7 C (107.1 F)
1941
45.0 C (113.0 F)
1942
43.3 C (109.9 F)
1943
21.1 C (70.0 F)
1944
33.3 C (91.9 F)
Coldest night (TNn)
The coldest night of the year at Hanford A E C, 1912 to 1944. The record is -32.8 C (-27.0 F) in 1919, marked on the chart; the median year is -19.4 C (-2.9 F).
Coldest night (TNn) at Hanford A E C by year
Year
Coldest night (TNn)
1912
-8.9 C (16.0 F)
1913
-22.2 C (-8.0 F)
1914
-19.4 C (-2.9 F)
1915
-19.4 C (-2.9 F)
1916
-30.6 C (-23.1 F)
1917
-16.7 C (1.9 F)
1918
-17.2 C (1.0 F)
1919
-32.8 C (-27.0 F)
1920
-12.8 C (9.0 F)
1921
-13.9 C (7.0 F)
1922
-26.1 C (-15.0 F)
1923
-19.4 C (-2.9 F)
1924
-23.3 C (-9.9 F)
1925
-12.8 C (9.0 F)
1926
-15.6 C (3.9 F)
1927
-24.4 C (-11.9 F)
1928
-13.3 C (8.1 F)
1929
-28.3 C (-18.9 F)
1930
-30.0 C (-22.0 F)
1931
-15.6 C (3.9 F)
1932
-23.3 C (-9.9 F)
1933
-24.4 C (-11.9 F)
1934
-7.8 C (18.0 F)
1935
-20.0 C (-4.0 F)
1936
-19.4 C (-2.9 F)
1937
-22.2 C (-8.0 F)
1938
-13.3 C (8.1 F)
1939
-13.3 C (8.1 F)
1940
-15.0 C (5.0 F)
1941
-11.1 C (12.0 F)
1942
-20.6 C (-5.1 F)
1943
-20.6 C (-5.1 F)
1944
-13.3 C (8.1 F)
Wettest day (Rx1day)
The wettest day of the year at Hanford A E C, 1912 to 1944. The record is 38.1 mm (1.5 in) in 1934, marked on the chart; the median year is 15.2 mm (0.6 in).
Wettest day (Rx1day) at Hanford A E C by year
Year
Wettest day (Rx1day)
1912
14.2 mm (0.6 in)
1913
16.5 mm (0.6 in)
1914
16.0 mm (0.6 in)
1915
18.0 mm (0.7 in)
1916
15.2 mm (0.6 in)
1917
21.6 mm (0.9 in)
1918
15.2 mm (0.6 in)
1919
11.4 mm (0.4 in)
1920
16.5 mm (0.6 in)
1921
22.4 mm (0.9 in)
1922
19.3 mm (0.8 in)
1923
12.2 mm (0.5 in)
1924
17.8 mm (0.7 in)
1925
14.0 mm (0.6 in)
1926
14.7 mm (0.6 in)
1927
10.7 mm (0.4 in)
1928
10.2 mm (0.4 in)
1929
12.7 mm (0.5 in)
1930
7.6 mm (0.30 in)
1931
16.0 mm (0.6 in)
1932
14.5 mm (0.6 in)
1933
11.2 mm (0.4 in)
1934
38.1 mm (1.5 in)
1935
6.4 mm (0.25 in)
1936
14.2 mm (0.6 in)
1937
15.2 mm (0.6 in)
1938
25.7 mm (1.0 in)
1939
7.6 mm (0.30 in)
1940
20.3 mm (0.8 in)
1941
17.8 mm (0.7 in)
1942
31.8 mm (1.3 in)
1943
8.1 mm (0.32 in)
1944
6.4 mm (0.25 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hanford A E C, 1912 to 1944. The record is 45.2 mm (1.8 in) in 1938, marked on the chart; the median year is 20.3 mm (0.8 in).
Wettest five days (Rx5day) at Hanford A E C by year
Year
Wettest five days (Rx5day)
1912
17.8 mm (0.7 in)
1913
17.3 mm (0.7 in)
1914
22.6 mm (0.9 in)
1915
19.3 mm (0.8 in)
1916
20.3 mm (0.8 in)
1917
24.1 mm (0.9 in)
1918
15.2 mm (0.6 in)
1919
15.3 mm (0.6 in)
1920
29.7 mm (1.2 in)
1921
26.8 mm (1.1 in)
1922
19.3 mm (0.8 in)
1923
20.4 mm (0.8 in)
1924
19.0 mm (0.7 in)
1925
20.9 mm (0.8 in)
1926
26.5 mm (1.0 in)
1927
17.3 mm (0.7 in)
1928
27.7 mm (1.1 in)
1929
18.3 mm (0.7 in)
1930
11.2 mm (0.4 in)
1931
31.7 mm (1.2 in)
1932
25.4 mm (1.0 in)
1933
18.6 mm (0.7 in)
1934
38.1 mm (1.5 in)
1935
13.4 mm (0.5 in)
1936
19.0 mm (0.7 in)
1937
27.4 mm (1.1 in)
1938
45.2 mm (1.8 in)
1939
17.7 mm (0.7 in)
1940
27.4 mm (1.1 in)
1941
33.3 mm (1.3 in)
1942
32.6 mm (1.3 in)
1943
10.2 mm (0.4 in)
1944
13.3 mm (0.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hanford A E C, 1912 to 1944. The record is 103 days in 1913, marked on the chart; the median year is 59 days.
Longest dry spell (CDD) at Hanford A E C by year
Year
Longest dry spell (CDD)
1912
34 days
1913
103 days
1914
46 days
1915
95 days
1916
94 days
1917
66 days
1918
56 days
1919
101 days
1920
71 days
1921
71 days
1922
67 days
1923
79 days
1924
78 days
1925
88 days
1926
59 days
1927
101 days
1928
40 days
1929
68 days
1930
48 days
1931
67 days
1932
60 days
1933
33 days
1934
56 days
1935
27 days
1936
22 days
1937
35 days
1938
35 days
1939
9 days
1940
22 days
1941
33 days
1942
97 days
1943
48 days
1944
38 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
22 years with a frost
Across 22 years with a frost, the median last spring frost at Hanford A E C falls on 25 April and the median first autumn frost on 15 October, which leaves a median of 171 days between them.
Frost dates and growing season at Hanford A E C
Measure
Median, all years
Earliest period
Recent period (1913 to 1940)
Recent against earliest
Fitted trend
Last spring frost
25 April
n/a
25 April
n/a
n/a
First autumn frost
15 October
n/a
15 October
n/a
n/a
Growing days
171 days
n/a
171 days
n/a
n/a
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.
Download the Data
Data for Hanford A E C standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hanford A E C 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.