United States · 1991–2020

Best time to visit
Delevan.

April leads for comfortable weather in Delevan: typically 23.7°C by day, 7.3°C at night, with 28 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortApril

Typical high23.7°C

Typical low7.3°C

Rain in April28 mm

Comfort

April

April · October · May

85climate match

Beach

June

June · May · July

72climate match

Outdoors

November

November · April · March

87climate match

The weakest month is January, scoring 35 against April’s 85 — days reach only 14.7°C, 9° below the 24°C the score treats as ideal, and nights drop to 3.4°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

3514.7° / 3.4°

Feb

4817.1° / 4.4°

Mar

6219.8° / 5.6°

Apr

8523.7° / 7.3°

May

7928° / 11°

Jun

7232.3° / 14.5°

Jul

6234.8° / 16.1°

Aug

6634.2° / 15.2°

Sep

6932.7° / 13.6°

Oct

8027.6° / 10.3°

Nov

6519.7° / 5.7°

Dec

3814.7° / 2.8°

Monthly climate evidence for Delevan — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	14.7°C	3.4°C	100 mm	8.3	9 h 41	35	Strong coverage
February	17.1°C	4.4°C	88 mm	6.5	10 h 39	48	Strong coverage
March	19.8°C	5.6°C	66 mm	6.6	11 h 49	62	Strong coverage
April	23.7°C	7.3°C	28 mm	3.6	13 h 11	85	Strong coverage
May	28°C	11°C	27 mm	3.2	14 h 19	79	Strong coverage
June	32.3°C	14.5°C	8 mm	1.3	14 h 55	72	Strong coverage
July	34.8°C	16.1°C	0 mm	0.1	14 h 41	62	Strong coverage
August	34.2°C	15.2°C	1 mm	0.2	13 h 42	66	Strong coverage
September	32.7°C	13.6°C	4 mm	0.7	12 h 24	69	Strong coverage
October	27.6°C	10.3°C	21 mm	2.3	11 h 06	80	Strong coverage
November	19.7°C	5.7°C	49 mm	4.8	9 h 58	65	Strong coverage
December	14.7°C	2.8°C	78 mm	6.8	9 h 24	38	Strong coverage

What has changed

Delevan runs +2.1°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

+3.3

Feb

+2.1

Mar

+1.2

Apr

+2.1

May

+1.9

Jun

+2.5

Jul

+1.8

Aug

+1.9

Sep

+1.7

Oct

+1.9

Nov

+1.9

Dec

+2.4

April daytime highs, 2011–2025. Last recorded: 24.2°C.

Records at WILLOWS 6 W, 1906–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	28.3°C16 Jan 2014	-9.4°C9 Jan 1937	73 mm31 Jan 1926	244 mm2008 · driest 0 mm in 2014	118
February	28.3°C3 Feb 2018	-6.1°C4 Feb 1989	97 mm11 Feb 1925	399 mm1998 · driest 0 mm in 2022	119
March	32.2°C17 Mar 2026	-6.1°C13 Mar 1918	91 mm9 Mar 1995	206 mm1949 · driest 0 mm in 2008	119
April	38.3°C16 Apr 1947	-5.6°C14 Apr 2003	53 mm5 Apr 1926	145 mm1948 · driest 0 mm in 1916	120
May	42.8°C24 May 2000	-1.7°C21 May 2002	39 mm16 May 1996	105 mm1998 · driest 0 mm in 1982	120
June	45.0°C30 Jun 1934	3.3°C16 Jun 1939	31 mm29 Jun 1982	46 mm1982 · driest 0 mm in 1908	119
July	47.2°C15 Jul 1972	6.1°C24 Jul 1990	23 mm8 Jul 1974	25 mm1974 · driest 0 mm in 1957	119
August	46.1°C9 Aug 1990	5.6°C23 Aug 1938	23 mm12 Aug 1965	24 mm1968 · driest 0 mm in 1911	119
September	46.1°C2 Sep 1950	2.8°C30 Sep 1971	66 mm6 Sep 1912	86 mm1912 · driest 0 mm in 1945	117
October	40.6°C2 Oct 2001	-1.1°C26 Oct 1919	74 mm24 Oct 2021	161 mm2021 · driest 0 mm in 1965	119
November	33.3°C2 Nov 1967	-5.6°C21 Nov 1985	81 mm9 Nov 1964	186 mm1983 · driest 0 mm in 1929	120
December	27.2°C15 Dec 1980	-11.7°C22 Dec 1990	84 mm29 Dec 1933	268 mm2014 · driest 0 mm in 1956	120

Typical days per month at WILLOWS 6 W, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	6	3
February	1	0	3	3
March	4	<1	2	2
April	12	4	<1	<1
May	22	12	<1	1
June	27	21	0	<1
July	30	28	0	0
August	30	28	0	<1
September	28	23	0	<1
October	22	10	0	<1
November	4	<1	2	2
December	0	0	7	2

The best month has moved. On the 1961–1990 numbers the strongest month here was October (scoring 83); on 2011–2025 it is April (86). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in WILLOWS 6 W’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	6%	27%	11%	32%	10.6–15.5°C
February	19%	25%	10%	30%	13.7–18.8°C
March	40%	20%	7%	21%	16.1–21.7°C
April	70%	13%	3%	10%	20.2–26.0°C
May	87%	9%	2%	5%	24.9–30.3°C
June	96%	4%	<1%	1%	29.6–34.5°C
July	100%	<1%	0%	0%	33.3–37.2°C
August	99%	1%	<1%	0%	32.4–36.4°C
September	96%	4%	<1%	2%	29.4–33.9°C
October	86%	9%	2%	7%	23.7–29.1°C
November	38%	18%	6%	19%	15.9–22.0°C
December	7%	24%	9%	26%	10.6–15.7°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.

1907Each stripe is one year’s mean temperature against the 114-year average. Warmest: 2021. Coolest: 1918.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5342514
NOAA station: USC00049699 · WILLOWS 6 W
Station distance: 21.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 39.35°, 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.

These places read the same station, so their numbers are identical — distance from WILLOWS 6 W is what differs

Willows→Bluegum→Butte City→Codora→Glenn→Kurand (historical)→

Or put two places side by side: Delevan vs Willows

Best time to visitDelevan.

April

June

November

The whole year,without the guesswork.

Delevan runs +2.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Delevan.

The whole year,
without the guesswork.

Delevan runs +2.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.