United States · 1991–2020

Best time to visit
Bismarck (historical).

April leads for comfortable weather in Bismarck (historical): typically 26.6°C by day, 10.8°C at night, with 6 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortApril

Typical high26.6°C

Typical low10.8°C

Rain in April6 mm

Comfort

April

April · March · October

84climate match

Beach

May

May · October · September

76climate match

Outdoors

November

November · March · February

90climate match

The weakest month is July, scoring 30 against April’s 84 — days average 40.7°C, 17° above the 24°C the score treats as ideal.

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

5316.5° / 2.7°

Feb

6418.8° / 4.6°

Mar

8322.7° / 7.7°

Apr

8426.6° / 10.8°

May

7431.8° / 15.4°

Jun

4637.6° / 20.1°

Jul

3040.7° / 23.5°

Aug

3240.1° / 23°

Sep

5335.9° / 19°

Oct

8028.6° / 12.6°

Nov

7421.1° / 5.9°

Dec

4915.7° / 1.9°

Monthly climate evidence for Bismarck (historical) — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	16.5°C	2.7°C	15 mm	2.6	10 h 02	53	Strong coverage
February	18.8°C	4.6°C	17 mm	2.6	10 h 52	64	Strong coverage
March	22.7°C	7.7°C	11 mm	2	11 h 52	83	Strong coverage
April	26.6°C	10.8°C	6 mm	1.2	13 h 01	84	Strong coverage
May	31.8°C	15.4°C	1 mm	0.3	13 h 59	74	Strong coverage
June	37.6°C	20.1°C	1 mm	0.2	14 h 29	46	Strong coverage
July	40.7°C	23.5°C	7 mm	1.1	14 h 17	30	Strong coverage
August	40.1°C	23°C	5 mm	0.7	13 h 28	32	Strong coverage
September	35.9°C	19°C	4 mm	0.7	12 h 21	53	Strong coverage
October	28.6°C	12.6°C	4 mm	0.8	11 h 15	80	Strong coverage
November	21.1°C	5.9°C	8 mm	1	10 h 17	74	Strong coverage
December	15.7°C	1.9°C	14 mm	2.3	9 h 49	49	Strong coverage

What has changed

Bismarck (historical) runs +1.1°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

+0.8

Feb

+0.4

Mar

+1.3

Apr

+1.9

May

+0.8

Jun

+1.9

Jul

+1.1

Aug

+1.7

Sep

+1.7

Oct

+0.9

Nov

+0.6

Dec

+0.5

April daytime highs, 2011–2025. Last recorded: 27.3°C.

Records at BARSTOW-DAGGETT AP, 1943–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	28.3°C20 Jan 1971	-13.3°C13 Jan 1963	28 mm7 Jan 1993	63 mm1993 · driest 0 mm in 2014	83
February	31.7°C28 Feb 2026	-8.3°C14 Feb 1949	27 mm12 Feb 1992	65 mm1998 · driest 0 mm in 2020	83
March	36.7°C20 Mar 2026	-5.0°C4 Mar 1966	31 mm6 Mar 1987	49 mm1992 · driest 0 mm in 1967	83
April	39.4°C22 Apr 2012	-2.2°C3 Apr 1945	26 mm8 Apr 2020	57 mm2020 · driest 0 mm in 1950	83
May	43.9°C28 May 2003	4.4°C13 May 1998	9 mm16 May 1962	15 mm1987 · driest 0 mm in 2026	83
June	47.8°C30 Jun 1994	7.2°C17 Jun 1995	18 mm6 Jun 1987	32 mm1972 · driest 0 mm in 1971	83
July	47.8°C10 Jul 2021	13.3°C1 Jul 1997	44 mm22 Jul 1984	81 mm1984 · driest 0 mm in 2020	83
August	47.2°C2 Aug 1986	12.8°C31 Aug 1953	52 mm7 Aug 1958	82 mm1958 · driest 0 mm in 1962	81
September	46.7°C6 Sep 2020	6.1°C26 Sep 1948	58 mm10 Sep 1976	85 mm1976 · driest 0 mm in 2014	82
October	42.2°C1 Oct 2024	-3.9°C30 Oct 1971	19 mm18 Oct 1948	29 mm1983 · driest 0 mm in 1993	82
November	32.8°C1 Nov 2015	-6.1°C30 Nov 2006	40 mm30 Nov 2007	52 mm1944 · driest 0 mm in 1992	82
December	28.3°C12 Dec 1958	-13.9°C23 Dec 1990	45 mm26 Dec 2019	64 mm2010 · driest 0 mm in 2017	83

Typical days per month at BARSTOW-DAGGETT AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	7	<1
February	3	<1	3	<1
March	12	2	<1	<1
April	20	9	0	<1
May	28	21	0	0
June	30	28	0	0
July	31	31	0	<1
August	31	31	0	<1
September	30	27	0	<1
October	24	14	0	<1
November	7	<1	3	<1
December	<1	0	11	<1

The best month has moved. On the 1961–1990 numbers the strongest month here was April (scoring 87); on 2011–2025 it is March (83). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in BARSTOW-DAGGETT AP’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	21%	8%	1%	6%	13.7–18.8°C
February	42%	8%	<1%	5%	16.2–21.9°C
March	65%	6%	<1%	2%	18.9–25.1°C
April	86%	4%	<1%	1%	23.4–29.3°C
May	97%	1%	0%	0%	28.5–34.0°C
June	99%	<1%	<1%	<1%	34.3–39.5°C
July	96%	4%	<1%	1%	38.5–42.0°C
August	96%	4%	<1%	1%	37.6–41.0°C
September	97%	3%	<1%	<1%	33.0–37.3°C
October	93%	3%	<1%	<1%	26.3–31.2°C
November	60%	5%	<1%	2%	18.6–23.3°C
December	19%	7%	1%	3%	13.7–18.4°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.

1944Each stripe is one year’s mean temperature against the 80-year average. Warmest: 1981. Coolest: 1944.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5328851
NOAA station: USW00023161 · BARSTOW-DAGGETT AP
Station distance: 14.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 34.97°, 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 BARSTOW-DAGGETT AP is what differs

Fort Irwin→Yermo→Calico→Daggett→Dunn→Gale→

Or put two places side by side: Bismarck (historical) vs Fort Irwin

Best time to visitBismarck (historical).

April

May

November

The whole year,without the guesswork.

Bismarck (historical) runs +1.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Bismarck (historical).

The whole year,
without the guesswork.

Bismarck (historical) runs +1.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.