United States · 1991–2020

Best time to visit
Humboldt.

May leads for comfortable weather in Humboldt: typically 24.5°C by day, 12.4°C at night, with 150 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high24.5°C

Typical low12.4°C

Rain in May150 mm

Comfort

May

May · September · October

72climate match

Beach

July

July · August · June

70climate match

Outdoors

October

October · April · November

78climate match

The weakest month is January, scoring 5 against May’s 72 — days reach only 6.1°C, 18° below the 24°C the score treats as ideal, and nights drop to -6.1°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

56.1° / -6.1°

Feb

108.2° / -4.2°

Mar

3414.5° / 0.9°

Apr

5619.9° / 6.4°

May

7224.5° / 12.4°

Jun

5629.7° / 18°

Jul

4832.5° / 20.4°

Aug

5232° / 19.2°

Sep

7227.9° / 14.4°

Oct

6621.1° / 7.5°

Nov

3814.4° / 1.5°

Dec

97.7° / -4°

Monthly climate evidence for Humboldt — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	6.1°C	-6.1°C	34 mm	4.5	9 h 49	5	Strong coverage
February	8.2°C	-4.2°C	46 mm	5.1	10 h 44	10	Strong coverage
March	14.5°C	0.9°C	75 mm	7.2	11 h 50	34	Strong coverage
April	19.9°C	6.4°C	109 mm	8	13 h 07	56	Strong coverage
May	24.5°C	12.4°C	150 mm	9.3	14 h 11	72	Strong coverage
June	29.7°C	18°C	142 mm	8.4	14 h 46	56	Good coverage
July	32.5°C	20.4°C	117 mm	6.5	14 h 32	48	Strong coverage
August	32°C	19.2°C	116 mm	6.4	13 h 37	52	Strong coverage
September	27.9°C	14.4°C	117 mm	5.7	12 h 23	72	Strong coverage
October	21.1°C	7.5°C	92 mm	6.7	11 h 09	66	Strong coverage
November	14.4°C	1.5°C	63 mm	5.2	10 h 05	38	Strong coverage
December	7.7°C	-4°C	50 mm	4.5	9 h 33	9	Strong coverage

Records at HUMBOLDT, 1992–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C3 Jan 1997	-22.8°C10 Jan 2010	70 mm5 Jan 2005	107 mm2005 · driest 1 mm in 2012	32
February	27.2°C23 Feb 2017	-28.3°C10 Feb 2011	95 mm21 Feb 1997	122 mm1997 · driest 0 mm in 2006	32
March	34.4°C22 Mar 2026	-17.8°C3 Mar 2014	91 mm4 Mar 2004	226 mm2021 · driest 24 mm in 2002	32
April	34.4°C26 Apr 1994	-10.6°C12 Apr 2004	206 mm28 Apr 2024	395 mm1994 · driest 21 mm in 2005	31
May	35.0°C31 May 1998	-9.4°C3 May 2004	108 mm21 May 2019	410 mm2019 · driest 22 mm in 1998	31
June	40.0°C30 Jun 2023	3.9°C22 Jun 2004	122 mm30 Jun 2007	417 mm2007 · driest 6 mm in 2020	30
July	41.7°C30 Jul 2012	1.7°C26 Jul 2004	128 mm21 Jul 1997	328 mm2010 · driest 7 mm in 2012	31
August	42.2°C3 Aug 2011	5.0°C13 Aug 2004	149 mm6 Aug 2017	332 mm2019 · driest 11 mm in 2000	30
September	41.7°C3 Sep 2000	-1.7°C29 Sep 2003	155 mm9 Sep 2016	262 mm2009 · driest 15 mm in 2007	30
October	34.4°C4 Oct 2006	-7.2°C31 Oct 1993	80 mm8 Oct 2018	220 mm2021 · driest 7 mm in 2011	31
November	28.9°C9 Nov 2006	-14.4°C19 Nov 2014	84 mm20 Nov 1994	221 mm2024 · driest 5 mm in 2007	32
December	25.6°C3 Dec 2021	-21.7°C9 Dec 2005	52 mm20 Dec 2011	103 mm2015 · driest 1 mm in 2025	32

Typical days per month at HUMBOLDT, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	<1	2
February	<1	0	22	1	2
March	2	<1	15	3	<1
April	7	1	4	3	0
May	16	4	<1	5	0
June	27	16	0	4	0
July	30	24	0	3	0
August	30	22	0	3	0
September	23	11	<1	3	0
October	10	2	3	3	0
November	1	0	13	2	<1
December	0	0	24	2	2

How often, not how much — every day in HUMBOLDT’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	2%	15%	3%	11%	3.4–8.6°C
February	6%	17%	4%	14%	4.5–12.6°C
March	24%	23%	8%	24%	12.0–19.0°C
April	42%	27%	11%	31%	17.2–22.9°C
May	59%	31%	16%	39%	22.6–26.4°C
June	71%	28%	14%	33%	28.1–31.0°C
July	78%	22%	10%	19%	30.4–34.5°C
August	79%	20%	9%	22%	29.5–34.2°C
September	79%	19%	9%	17%	26.2–30.7°C
October	52%	21%	10%	21%	18.5–23.6°C
November	20%	17%	8%	14%	11.3–17.6°C
December	3%	14%	5%	8%	5.0–10.7°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.

1997Each stripe is one year’s mean temperature against the 29-year average. Warmest: 2012. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4273255
NOAA station: USC00143867 · HUMBOLDT
Station distance: 0.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 24 usable years
Daylight: Calculated from latitude 37.81°, 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 HUMBOLDT is what differs

Cookville→Petrolia→

Or put two places side by side: Humboldt vs Cookville

Best time to visitHumboldt.

May

July

October

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Humboldt.

The whole year,
without the guesswork.

Nearby, measured,
and named.