United States · 1991–2020

Best time to visit
Barretts.

June leads for comfortable weather in Barretts: typically 23.8°C by day, 6.2°C at night, with 49 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high23.8°C

Typical low6.2°C

Rain in June49 mm

Comfort

June

June · September · August

78climate match

Beach

July

July · August · June

64climate match

Outdoors

September

September · May · June

81climate match

The weakest month is January, scoring 5 against June’s 78 — 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° / -9.3°

Feb

54.1° / -8.4°

Mar

148.8° / -4.8°

Apr

3213.5° / -1.5°

May

5619.1° / 2.7°

Jun

7823.8° / 6.2°

Jul

7129.4° / 9.1°

Aug

7228.3° / 8.1°

Sep

7622.7° / 4.5°

Oct

4014.6° / -0.5°

Nov

56.2° / -5.7°

Dec

50.8° / -10°

Monthly climate evidence for Barretts — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	1.8°C	-9.3°C	8 mm	1.9	9 h 06	5	Strong coverage
February	4.1°C	-8.4°C	9 mm	2.5	10 h 19	5	Strong coverage
March	8.8°C	-4.8°C	17 mm	3.4	11 h 46	14	Strong coverage
April	13.5°C	-1.5°C	38 mm	6.1	13 h 26	32	Strong coverage
May	19.1°C	2.7°C	50 mm	7.4	14 h 50	56	Strong coverage
June	23.8°C	6.2°C	49 mm	7.1	15 h 36	78	Strong coverage
July	29.4°C	9.1°C	23 mm	4.2	15 h 18	71	Strong coverage
August	28.3°C	8.1°C	22 mm	4.1	14 h 05	72	Strong coverage
September	22.7°C	4.5°C	24 mm	3.9	12 h 28	76	Strong coverage
October	14.6°C	-0.5°C	24 mm	4.2	10 h 52	40	Strong coverage
November	6.2°C	-5.7°C	13 mm	3.2	9 h 28	5	Strong coverage
December	0.8°C	-10°C	12 mm	2.7	8 h 46	5	Strong coverage

What has changed

Barretts runs -0.4°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

-0.1

Feb

-2.8

Mar

-0.2

Apr

-1.0

May

-0.7

Jun

+0.4

Jul

+1.0

Aug

+0.3

Sep

+0.5

Oct

-2.0

Nov

-0.6

Dec

-0.1

June daytime highs, 2011–2025. Last recorded: 24.4°C.

Records at DILLON U OF MONTANA WESTERN, 1895–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.6°C31 Jan 1953	-40.0°C13 Jan 2024	28 mm9 Jan 1909	87 mm1916 · driest 0 mm in 2026	129
February	18.3°C10 Feb 1951	-40.0°C9 Feb 1933	26 mm20 Feb 1920	54 mm1904 · driest 0 mm in 1991	128
March	23.9°C20 Mar 2026	-32.2°C3 Mar 1896	38 mm5 Mar 2026	86 mm1924 · driest 1 mm in 1964	129
April	28.9°C25 Apr 1946	-19.4°C8 Apr 1982	51 mm18 Apr 2023	126 mm1902 · driest 0 mm in 2026	129
May	32.8°C19 May 1954	-9.4°C11 May 1967	53 mm23 May 2021	233 mm1908 · driest 0 mm in 2026	128
June	36.7°C28 Jun 2015	-5.0°C16 Jun 2001	51 mm27 Jun 2026	176 mm1944 · driest 1 mm in 2021	128
July	38.9°C12 Jul 2002	-1.1°C2 Jul 1955	39 mm22 Jul 2008	118 mm1915 · driest 0 mm in 1999	128
August	37.8°C12 Aug 1940	-3.9°C25 Aug 1992	33 mm26 Aug 1905	99 mm1912 · driest 0 mm in 2001	127
September	34.4°C5 Sep 2020	-12.8°C24 Sep 1926	61 mm3 Sep 1901	122 mm1940 · driest 0 mm in 1979	126
October	30.0°C8 Oct 1911	-25.0°C30 Oct 1935	45 mm17 Oct 2024	79 mm1938 · driest 0 mm in 1895	127
November	26.1°C5 Nov 1908	-35.0°C16 Nov 1955	38 mm5 Nov 1918	53 mm1931 · driest 0 mm in 1939	127
December	18.3°C9 Dec 1939	-38.3°C22 Dec 1990	25 mm5 Dec 2025	60 mm1919 · driest 0 mm in 1938	127

Typical days per month at DILLON U OF MONTANA WESTERN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	1
February	0	0	27	<1	1
March	0	0	27	<1	<1
April	<1	0	20	1	<1
May	5	<1	8	2	0
June	13	3	<1	2	0
July	26	15	0	<1	0
August	24	11	<1	<1	0
September	11	2	4	<1	<1
October	1	0	17	<1	<1
November	0	0	25	<1	1
December	0	0	30	<1	2

How often, not how much — every day in DILLON U OF MONTANA WESTERN’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%	9%	<1%	5%	-1.8–4.6°C
February	0%	11%	<1%	6%	0.3–7.3°C
March	1%	13%	2%	9%	4.6–11.3°C
April	14%	17%	4%	15%	10.3–16.9°C
May	40%	25%	6%	31%	16.2–21.5°C
June	64%	26%	6%	29%	20.8–26.6°C
July	83%	17%	3%	14%	26.6–30.9°C
August	83%	16%	3%	13%	25.7–29.8°C
September	64%	15%	3%	12%	19.3–24.9°C
October	28%	12%	2%	8%	12.6–19.2°C
November	1%	10%	1%	5%	4.0–10.5°C
December	0%	10%	<1%	5%	-1.3–6.0°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.

1900Each stripe is one year’s mean temperature against the 121-year average. Warmest: 1934. Coolest: 1955.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5638605
NOAA station: USC00242409 · DILLON U OF MONTANA WESTERN
Station distance: 11.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 45.13°, 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 DILLON U OF MONTANA WESTERN is what differs

Dillon→Dalys→Ford→

Or put two places side by side: Barretts vs Dillon

Best time to visitBarretts.