United States · 1991–2020

Best time to visit
Calistoga.

May leads for comfortable weather in Calistoga: typically 25.6°C by day, 8.2°C at night, with 33 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high25.6°C

Typical low8.2°C

Rain in May33 mm

Comfort

May

May · October · April

82climate match

Beach

June

June · July · August

68climate match

Outdoors

May

May · April · November

80climate match

The weakest month is December, scoring 14 against May’s 82 — days reach only 15.2°C, 9° below the 24°C the score treats as ideal, and 234 mm of rain falls.

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

1915.8° / 2.8°

Feb

2917.3° / 3.9°

Mar

4519.7° / 5.1°

Apr

7222.2° / 6°

May

8225.6° / 8.2°

Jun

7230° / 10.5°

Jul

6532.7° / 11.6°

Aug

6532.8° / 11.5°

Sep

6731.5° / 10.2°

Oct

7626.6° / 7.5°

Nov

5819.8° / 4.3°

Dec

1415.2° / 2.6°

Monthly climate evidence for Calistoga — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	15.8°C	2.8°C	215 mm	10.6	9 h 45	19	Strong coverage
February	17.3°C	3.9°C	200 mm	10.1	10 h 41	29	Strong coverage
March	19.7°C	5.1°C	156 mm	9.2	11 h 50	45	Strong coverage
April	22.2°C	6°C	61 mm	5.4	13 h 09	72	Strong coverage
May	25.6°C	8.2°C	33 mm	3.1	14 h 15	82	Strong coverage
June	30°C	10.5°C	6 mm	0.8	14 h 51	72	Strong coverage
July	32.7°C	11.6°C	0 mm	0.1	14 h 37	65	Strong coverage
August	32.8°C	11.5°C	1 mm	0.1	13 h 40	65	Strong coverage
September	31.5°C	10.2°C	3 mm	0.5	12 h 23	67	Strong coverage
October	26.6°C	7.5°C	50 mm	3.1	11 h 07	76	Strong coverage
November	19.8°C	4.3°C	87 mm	5.3	10 h 01	58	Strong coverage
December	15.2°C	2.6°C	234 mm	11.1	9 h 29	14	Strong coverage

Records at CALISTOGA, 1916–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	28.9°C16 Jan 2014	-8.3°C17 Jan 2012	147 mm9 Jan 1995	768 mm1995 · driest 0 mm in 2025	46
February	31.1°C12 Feb 1996	-8.3°C2 Feb 1999	206 mm17 Feb 1986	814 mm1986 · driest 1 mm in 2020	50
March	34.4°C18 Mar 2026	-7.2°C13 Mar 2010	143 mm9 Mar 1995	487 mm1991 · driest 0 mm in 2026	48
April	38.9°C8 Apr 1989	-6.7°C4 Apr 2001	67 mm2 Apr 1996	188 mm1982 · driest 0 mm in 2003	49
May	40.0°C31 May 2001	-7.8°C11 May 2010	58 mm10 May 2005	172 mm2005 · driest 0 mm in 1992	51
June	42.2°C19 Jun 1917	0.0°C10 Jun 2010	26 mm4 Jun 1993	55 mm2011 · driest 0 mm in 2026	48
July	45.6°C4 Jul 1931	0.0°C11 Jul 2010	14 mm29 Jul 1985	15 mm1985 · driest 0 mm in 1999	49
August	43.9°C25 Aug 1932	3.3°C3 Aug 1982	21 mm20 Aug 1997	21 mm1997 · driest 0 mm in 2016	48
September	47.8°C7 Sep 2022	0.0°C29 Sep 1982	30 mm16 Sep 1989	58 mm1989 · driest 0 mm in 2012	48
October	41.1°C7 Oct 1996	-2.8°C31 Oct 2002	126 mm25 Oct 2021	287 mm2021 · driest 0 mm in 2019	49
November	35.6°C10 Nov 1932	-6.1°C20 Nov 2000	103 mm30 Nov 2012	385 mm1983 · driest 3 mm in 1986	46
December	30.6°C17 Dec 1998	-12.2°C11 Dec 1932	150 mm12 Dec 1995	481 mm2002 · driest 0 mm in 1989	45

Typical days per month at CALISTOGA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	9	5
February	2	0	5	5
March	5	<1	3	4
April	8	2	2	2
May	16	6	<1	1
June	23	15	0	<1
July	27	22	0	0
August	28	22	0	0
September	26	18	0	0
October	17	9	<1	1
November	5	<1	5	3
December	<1	0	10	7

How often, not how much — every day in CALISTOGA’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	16%	33%	18%	40%	13.4–18.0°C
February	29%	31%	17%	37%	15.2–21.1°C
March	47%	28%	14%	31%	16.5–23.4°C
April	66%	18%	6%	16%	19.6–25.5°C
May	85%	10%	3%	8%	23.1–28.5°C
June	97%	3%	<1%	<1%	27.1–32.4°C
July	100%	<1%	<1%	0%	31.2–35.2°C
August	99%	1%	<1%	<1%	31.3–34.4°C
September	96%	3%	<1%	2%	29.0–33.6°C
October	83%	12%	5%	11%	24.0–29.7°C
November	45%	22%	11%	26%	16.3–22.9°C
December	12%	31%	18%	38%	13.2–17.3°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.

1932Each stripe is one year’s mean temperature against the 36-year average. Warmest: 1988. Coolest: 1982.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5332937
NOAA station: USC00041312 · CALISTOGA
Station distance: 0.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude 38.58°, 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 CALISTOGA is what differs

Kellogg→Larkmead→Mirabel (historical)→Woodleaf→

Or put two places side by side: Calistoga vs Kellogg

Best time to visitCalistoga.

May

June

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Calistoga.

The whole year,
without the guesswork.

Nearby, measured,
and named.