United States · 1991–2020

Best time to visit
Vaughn.

August leads for comfortable weather in Vaughn: typically 28.4°C by day, 10.4°C at night, with 31 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high28.4°C

Typical low10.4°C

Rain in August31 mm

Comfort

August

August · September · July

76climate match

Beach

July

July · August · September

70climate match

Outdoors

September

September · June · May

85climate match

The weakest month is January, scoring 5 against August’s 76 — days reach only 1.8°C, 22° below 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

51.8° / -9.2°

Feb

52.8° / -8.9°

Mar

97.8° / -5.2°

Apr

2912.7° / -0.9°

May

5218.1° / 3.9°

Jun

7322.7° / 7.9°

Jul

7529.1° / 11.1°

Aug

7628.4° / 10.4°

Sep

7622° / 6.2°

Oct

3913.9° / 0.6°

Nov

76.5° / -4.4°

Dec

52° / -8.4°

Monthly climate evidence for Vaughn — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	1.8°C	-9.2°C	14 mm	4	8 h 50	5	Strong coverage
February	2.8°C	-8.9°C	15 mm	4.5	10 h 10	5	Strong coverage
March	7.8°C	-5.2°C	17 mm	4.4	11 h 44	9	Strong coverage
April	12.7°C	-0.9°C	44 mm	7.2	13 h 33	29	Strong coverage
May	18.1°C	3.9°C	62 mm	8.2	15 h 05	52	Strong coverage
June	22.7°C	7.9°C	69 mm	8.6	15 h 57	73	Strong coverage
July	29.1°C	11.1°C	31 mm	4.8	15 h 37	75	Strong coverage
August	28.4°C	10.4°C	31 mm	4.5	14 h 16	76	Strong coverage
September	22°C	6.2°C	34 mm	4.8	12 h 30	76	Strong coverage
October	13.9°C	0.6°C	28 mm	4.9	10 h 46	39	Strong coverage
November	6.5°C	-4.4°C	17 mm	3.8	9 h 13	7	Strong coverage
December	2°C	-8.4°C	13 mm	3.6	8 h 27	5	Strong coverage

What has changed

Vaughn runs +0.7°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

+3.1

Feb

-2.7

Mar

+1.4

Apr

-0.3

May

-0.2

Jun

-0.3

Jul

+1.3

Aug

+1.4

Sep

+2.5

Oct

-0.7

Nov

+0.8

Dec

+2.0

August daytime highs, 2011–2025. Last recorded: 28.9°C.

Records at GREAT FALLS AP, 1937–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	19.4°C31 Jan 1992	-38.3°C23 Jan 1969	18 mm2 Jan 1955	52 mm1969 · driest 0 mm in 1944	89
February	21.1°C27 Feb 1992	-37.2°C9 Feb 1939	22 mm21 Feb 1951	66 mm2019 · driest 0 mm in 2005	89
March	25.6°C30 Mar 2004	-35.5°C3 Mar 2019	27 mm29 Mar 1977	55 mm1967 · driest 2 mm in 2015	89
April	31.7°C20 Apr 1980	-22.2°C21 Apr 2008	56 mm30 Apr 1951	118 mm1975 · driest 1 mm in 1981	90
May	33.9°C21 May 1980	-11.1°C1 May 2009	64 mm25 May 1980	207 mm1953 · driest 7 mm in 1937	90
June	38.3°C30 Jun 1990	-0.6°C8 Jun 2009	62 mm2 Jun 2005	174 mm2005 · driest 11 mm in 2015	90
July	40.6°C10 Jul 1973	2.2°C16 Jul 1999	41 mm10 Jul 1983	119 mm1993 · driest 1 mm in 1959	90
August	41.1°C24 Aug 1969	-1.1°C24 Aug 1992	73 mm23 Aug 2014	125 mm1985 · driest 1 mm in 1969	89
September	38.9°C3 Sep 2022	-11.0°C30 Sep 2019	40 mm27 Sep 1982	90 mm1941 · driest 0 mm in 2012	89
October	32.8°C3 Oct 1943	-23.9°C30 Oct 1991	58 mm3 Oct 2015	87 mm1975 · driest 0 mm in 1937	89
November	24.4°C7 Nov 1999	-31.7°C28 Nov 1985	24 mm20 Nov 1946	58 mm1955 · driest 1 mm in 2009	89
December	20.6°C1 Dec 2021	-41.7°C29 Dec 1968	20 mm14 Dec 2015	49 mm1977 · driest 0 mm in 1954	89

Typical days per month at GREAT FALLS AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	<1	7
February	0	0	25	<1	8
March	0	0	25	<1	7
April	<1	0	18	1	5
May	5	<1	6	2	1
June	11	3	<1	2	<1
July	25	15	0	<1	0
August	25	14	<1	<1	<1
September	12	4	2	1	<1
October	2	<1	15	<1	3
November	0	0	23	<1	6
December	0	0	27	<1	7

How often, not how much — every day in GREAT FALLS 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	0%	16%	<1%	14%	-5.3–5.5°C
February	<1%	17%	<1%	15%	-3.0–8.0°C
March	3%	18%	1%	16%	1.9–11.6°C
April	15%	21%	3%	21%	9.6–16.2°C
May	36%	27%	6%	32%	15.9–21.2°C
June	60%	28%	7%	34%	20.2–26.0°C
July	82%	16%	3%	12%	26.4–31.6°C
August	81%	16%	3%	12%	25.1–31.0°C
September	59%	17%	3%	16%	18.6–25.5°C
October	25%	14%	2%	10%	11.4–18.0°C
November	2%	14%	<1%	11%	2.8–10.5°C
December	<1%	15%	<1%	12%	-3.4–6.5°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.

1938Each stripe is one year’s mean temperature against the 88-year average. Warmest: 1987. Coolest: 1996.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5684372
NOAA station: USW00024143 · GREAT FALLS AP
Station distance: 15.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 47.56°, 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 GREAT FALLS AP is what differs

Sun Prairie→Emerson Junction→Garrett Mobile Home Park→Manchester→

Or put two places side by side: Vaughn vs Sun Prairie

Best time to visitVaughn.