April
April · October · May
89climate match
United States · 1991–2020
Best time to visit
Hanford.
April leads for comfortable weather in Hanford: typically 23.7°C by day, 9.2°C at night, with 18 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortApril
Typical high23.7°C
Typical low9.2°C
Rain in April18 mm
May
May · June · July
75climate match
March
March · November · April
91climate match
The weakest month is January, scoring 37 against April’s 89 — days reach only 13°C, 11° below the 24°C the score treats as ideal, and nights drop to 2.8°C.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
3713° / 2.8°
Feb
5416.6° / 4.5°
Mar
7120.3° / 7°
Apr
8923.7° / 9.2°
May
8228.4° / 12.8°
Jun
6833° / 16.3°
Jul
5336.3° / 18.7°
Aug
5635.8° / 17.9°
Sep
7032.8° / 15.2°
Oct
8326.7° / 10.4°
Nov
6619° / 5.4°
Dec
3913.2° / 2.2°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 13°C | 2.8°C | 46 mm | 6.6 | 9 h 56 | 37 | Strong coverage |
| February | 16.6°C | 4.5°C | 36 mm | 6 | 10 h 48 | 54 | Strong coverage |
| March | 20.3°C | 7°C | 38 mm | 4.9 | 11 h 51 | 71 | Strong coverage |
| April | 23.7°C | 9.2°C | 18 mm | 3.1 | 13 h 04 | 89 | Strong coverage |
| May | 28.4°C | 12.8°C | 8 mm | 1.5 | 14 h 04 | 82 | Strong coverage |
| June | 33°C | 16.3°C | 3 mm | 0.4 | 14 h 37 | 68 | Strong coverage |
| July | 36.3°C | 18.7°C | 0 mm | 0.1 | 14 h 24 | 53 | Strong coverage |
| August | 35.8°C | 17.9°C | 0 mm | 0.1 | 13 h 32 | 56 | Strong coverage |
| September | 32.8°C | 15.2°C | 2 mm | 0.3 | 12 h 22 | 70 | Strong coverage |
| October | 26.7°C | 10.4°C | 11 mm | 1.6 | 11 h 12 | 83 | Strong coverage |
| November | 19°C | 5.4°C | 17 mm | 2.7 | 10 h 11 | 66 | Strong coverage |
| December | 13.2°C | 2.2°C | 38 mm | 5.3 | 9 h 42 | 39 | Strong coverage |
What has changed
Hanford runs +1.4°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+2.5
Feb
+1.0
Mar
+1.1
Apr
+1.1
May
0.0
Jun
+1.2
Jul
+1.6
Aug
+1.9
Sep
+1.8
Oct
+0.4
Nov
+1.4
Dec
+2.5
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 24.4°C20 Jan 1981 | -10.0°C7 Jan 1913 | 57 mm2 Jan 2006 | 170 mm1969 · driest 0 mm in 1948 | 119 |
| February | 30.0°C18 Feb 1930 | -7.8°C17 Feb 1903 | 63 mm25 Feb 2023 | 128 mm1978 · driest 0 mm in 1900 | 120 |
| March | 34.4°C29 Mar 1906 | -5.0°C24 Mar 1904 | 40 mm9 Mar 1986 | 168 mm1991 · driest 0 mm in 1972 | 121 |
| April | 36.7°C12 Apr 2014 | -3.9°C1 Apr 1906 | 36 mm4 Apr 2006 | 86 mm2006 · driest 0 mm in 2023 | 121 |
| May | 41.7°C30 May 1984 | -1.1°C28 May 2019 | 21 mm27 May 1971 | 52 mm1906 · driest 0 mm in 1904 | 118 |
| June | 45.6°C7 Jun 1915 | 3.3°C3 Jun 1917 | 25 mm19 Jun 1914 | 29 mm1931 · driest 0 mm in 1999 | 118 |
| July | 46.7°C27 Jul 1933 | 7.2°C12 Jul 1903 | 10 mm9 Jul 2015 | 11 mm2015 · driest 0 mm in 1977 | 121 |
| August | 46.1°C14 Aug 1933 | 4.4°C17 Aug 1906 | 9 mm21 Aug 2023 | 15 mm2023 · driest 0 mm in 1960 | 120 |
| September | 43.3°C4 Sep 1955 | 1.7°C26 Sep 1948 | 31 mm25 Sep 1904 | 63 mm1904 · driest 0 mm in 2021 | 119 |
| October | 39.4°C4 Oct 2024 | -2.2°C29 Oct 1971 | 41 mm30 Oct 1996 | 62 mm1996 · driest 0 mm in 1978 | 117 |
| November | 33.3°C1 Nov 1949 | -7.8°C12 Nov 1938 | 34 mm11 Nov 1985 | 93 mm1926 · driest 0 mm in 1980 | 115 |
| December | 25.0°C3 Dec 1954 | -9.4°C24 Dec 1990 | 46 mm19 Dec 2010 | 164 mm2010 · driest 0 mm in 1999 | 117 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 8 | 1 |
| February | <1 | 0 | 3 | 1 |
| March | 5 | <1 | <1 | 1 |
| April | 13 | 4 | 0 | <1 |
| May | 24 | 13 | 0 | <1 |
| June | 29 | 23 | 0 | <1 |
| July | 31 | 31 | 0 | 0 |
| August | 31 | 30 | 0 | 0 |
| September | 29 | 23 | 0 | 0 |
| October | 21 | 7 | 0 | <1 |
| November | 3 | <1 | 2 | <1 |
| December | 0 | 0 | 10 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 3% | 20% | 4% | 23% | 10.2–15.4°C |
| February | 19% | 20% | 4% | 22% | 14.7–18.9°C |
| March | 49% | 18% | 4% | 16% | 17.3–22.6°C |
| April | 75% | 10% | 2% | 6% | 21.4–26.4°C |
| May | 93% | 5% | <1% | <1% | 25.7–31.1°C |
| June | 99% | 1% | <1% | <1% | 30.5–35.8°C |
| July | 100% | <1% | 0% | 0% | 34.6–38.5°C |
| August | 100% | <1% | 0% | 0% | 33.7–37.6°C |
| September | 98% | 2% | <1% | <1% | 30.0–34.5°C |
| October | 90% | 5% | 1% | 3% | 24.5–29.5°C |
| November | 42% | 11% | 2% | 8% | 16.8–21.7°C |
| December | 4% | 17% | 3% | 16% | 10.8–15.8°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 5355180
- NOAA station
- USC00043747 · HANFORD 1 S
- Station distance
- 1.5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 29 usable years
- Daylight
- Calculated from latitude 36.33°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.