United States · 1991–2020

Best time to visit
White Horse.

September leads for comfortable weather in White Horse: typically 24.4°C by day, 8.8°C at night, with 44 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.4°C

Typical low8.8°C

Rain in September44 mm

Comfort

September

September · August · June

84climate match

Beach

August

August · July · September

77climate match

Outdoors

May

May · September · October

80climate match

The weakest month is January, scoring 5 against September’s 84 — days reach only 0.8°C, 23° below the 24°C the score treats as ideal, and nights drop to -11.5°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

50.8° / -11.5°

Feb

52.9° / -9.6°

Mar

108.1° / -4.9°

Apr

3313.8° / 0.6°

May

6120° / 6.8°

Jun

7525.6° / 12.5°

Jul

6930.3° / 16.2°

Aug

7829.7° / 14.8°

Sep

8424.4° / 8.8°

Oct

4716.2° / 1.8°

Nov

107.7° / -5°

Dec

52.2° / -9.8°

Monthly climate evidence for White Horse — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	0.8°C	-11.5°C	13 mm	3.1	9 h 18	5	Good coverage
February	2.9°C	-9.6°C	17 mm	3.6	10 h 26	5	Good coverage
March	8.1°C	-4.9°C	28 mm	4.8	11 h 47	10	Good coverage
April	13.8°C	0.6°C	65 mm	6.7	13 h 21	33	Good coverage
May	20°C	6.8°C	80 mm	8.5	14 h 39	61	Good coverage
June	25.6°C	12.5°C	104 mm	9.5	15 h 23	75	Good coverage
July	30.3°C	16.2°C	69 mm	6.7	15 h 05	69	Good coverage
August	29.7°C	14.8°C	43 mm	5.7	13 h 57	78	Good coverage
September	24.4°C	8.8°C	44 mm	5.2	12 h 27	84	Good coverage
October	16.2°C	1.8°C	47 mm	5.4	10 h 57	47	Good coverage
November	7.7°C	-5°C	18 mm	3.5	9 h 38	10	Good coverage
December	2.2°C	-9.8°C	10 mm	3	8 h 59	5	Good coverage

Records at MISSION, 1966–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.9°C17 Jan 1974	-33.3°C6 Jan 1988	19 mm7 Jan 2010	40 mm2010 · driest 0 mm in 1989	45
February	23.3°C29 Feb 1972	-34.4°C9 Feb 1994	27 mm29 Feb 2012	38 mm2011 · driest 1 mm in 1979	46
March	29.4°C31 Mar 1978	-32.8°C11 Mar 1998	31 mm18 Mar 1986	130 mm1977 · driest 1 mm in 1978	46
April	35.0°C22 Apr 1980	-14.4°C8 Apr 1997	85 mm20 Apr 1971	146 mm1971 · driest 10 mm in 2004	46
May	36.7°C20 May 2009	-9.4°C13 May 1983	87 mm16 May 1991	210 mm1977 · driest 9 mm in 1992	46
June	41.7°C25 Jun 1988	-2.8°C2 Jun 1969	72 mm16 Jun 1979	221 mm2011 · driest 8 mm in 2002	47
July	43.9°C17 Jul 2006	1.7°C30 Jul 1971	58 mm8 Jul 1990	175 mm1972 · driest 4 mm in 2007	47
August	42.2°C7 Aug 1980	2.2°C28 Aug 1976	49 mm10 Aug 1994	122 mm1994 · driest 6 mm in 2001	47
September	40.0°C3 Sep 1983	-7.8°C30 Sep 1974	72 mm21 Sep 1989	126 mm1989 · driest 6 mm in 1991	47
October	35.0°C4 Oct 1967	-17.2°C30 Oct 1991	70 mm1 Oct 2004	114 mm1995 · driest 2 mm in 1999	45
November	29.4°C9 Nov 1999	-26.7°C29 Nov 1976	31 mm24 Nov 2001	52 mm1985 · driest 0 mm in 1974	46
December	21.7°C2 Dec 1998	-35.6°C23 Dec 1983	17 mm6 Dec 1976	37 mm2009 · driest 0 mm in 1991	46

Typical days per month at MISSION, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	4
February	0	0	27	<1	4
March	<1	0	25	<1	3
April	3	<1	14	2	2
May	7	2	2	3	0
June	17	6	0	3	0
July	27	17	0	2	0
August	26	16	0	1	0
September	15	7	1	2	0
October	5	1	11	2	<1
November	<1	0	24	<1	3
December	0	0	30	<1	4

How often, not how much — every day in MISSION’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	<1%	9%	<1%	2%	-3.6–4.7°C
February	<1%	10%	<1%	6%	-3.1–7.1°C
March	9%	15%	3%	12%	3.7–11.6°C
April	24%	23%	6%	25%	11.3–17.5°C
May	45%	28%	8%	33%	17.8–23.0°C
June	66%	28%	9%	32%	23.2–28.4°C
July	76%	24%	7%	24%	28.7–33.8°C
August	80%	19%	5%	13%	27.3–32.3°C
September	67%	17%	4%	16%	20.9–27.1°C
October	33%	16%	4%	11%	14.8–19.4°C
November	8%	12%	1%	8%	3.6–11.4°C
December	<1%	10%	<1%	4%	-2.4–5.2°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.

1967Each stripe is one year’s mean temperature against the 42-year average. Warmest: 1987. Coolest: 1996.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5770333
NOAA station: USC00395620 · MISSION
Station distance: 4.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 43.31°, 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 MISSION is what differs

Rosebud→Mission→Antelope→Soldier Creek→Two Strike→Antelope Development Area→

Or put two places side by side: White Horse vs Rosebud

Best time to visitWhite Horse.

September

August

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
White Horse.

The whole year,
without the guesswork.

Nearby, measured,
and named.