United States · 1991–2020

Best time to visit
Adams.

June leads for comfortable weather in Adams: typically 25.5°C by day, 8.3°C at night, with 31 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high25.5°C

Typical low8.3°C

Rain in June31 mm

Comfort

June

June · September · May

81climate match

Beach

July

July · August · June

63climate match

Outdoors

May

May · June · October

81climate match

The weakest month is January, scoring 5 against June’s 81 — days reach only 5.9°C, 18° 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

55.9° / -2.7°

Feb

138.4° / -2°

Mar

2712.6° / -0.2°

Apr

4616.5° / 1.9°

May

6721.1° / 5.6°

Jun

8125.5° / 8.3°

Jul

6732° / 11.2°

Aug

6731.3° / 10.3°

Sep

7726.1° / 6.3°

Oct

5518.3° / 2°

Nov

1610.1° / -0.7°

Dec

55.6° / -2.5°

Monthly climate evidence for Adams — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.9°C	-2.7°C	52 mm	9.9	9 h 02	5	Strong coverage
February	8.4°C	-2°C	39 mm	8.2	10 h 17	13	Strong coverage
March	12.6°C	-0.2°C	51 mm	10	11 h 46	27	Strong coverage
April	16.5°C	1.9°C	44 mm	8	13 h 27	46	Strong coverage
May	21.1°C	5.6°C	50 mm	7.6	14 h 54	67	Strong coverage
June	25.5°C	8.3°C	31 mm	5.3	15 h 42	81	Good coverage
July	32°C	11.2°C	7 mm	1.4	15 h 23	67	Good coverage
August	31.3°C	10.3°C	9 mm	1.5	14 h 08	67	Strong coverage
September	26.1°C	6.3°C	13 mm	2.8	12 h 29	77	Strong coverage
October	18.3°C	2°C	33 mm	6.1	10 h 51	55	Strong coverage
November	10.1°C	-0.7°C	58 mm	10.6	9 h 24	16	Strong coverage
December	5.6°C	-2.5°C	56 mm	10.5	8 h 41	5	Strong coverage

What has changed

Adams runs +0.5°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

+1.2

Feb

-1.0

Mar

0.0

Apr

-0.1

May

+0.5

Jun

+0.3

Jul

+1.9

Aug

+1.3

Sep

+0.4

Oct

+0.2

Nov

+0.2

Dec

+0.6

June daytime highs, 2016–2024. Last recorded: 27.1°C.

Records at PENDLETON BRANCH EXP STN, 1932–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C21 Jan 1968	-29.4°C1 Jan 1942	27 mm10 Jan 1989	133 mm1970 · driest 7 mm in 2022	76
February	23.3°C25 Feb 1986	-25.0°C3 Feb 1979	44 mm21 Feb 2025	101 mm1940 · driest 1 mm in 2024	75
March	28.9°C27 Mar 2025	-21.1°C5 Mar 2019	29 mm4 Mar 1983	99 mm1983 · driest 1 mm in 2022	77
April	32.8°C22 Apr 1934	-10.0°C19 Apr 1966	31 mm29 Apr 1933	93 mm1974 · driest 5 mm in 1968	76
May	37.8°C28 May 1934	-6.1°C17 May 1942	40 mm19 May 1991	120 mm1991 · driest 0 mm in 2023	74
June	46.1°C30 Jun 2021	-2.2°C1 Jun 1966	39 mm26 Jun 1942	82 mm1941 · driest 0 mm in 2003	70
July	43.3°C17 Jul 1960	0.6°C7 Jul 1971	29 mm9 Jul 2016	44 mm1992 · driest 0 mm in 1973	71
August	46.1°C4 Aug 1961	-1.1°C31 Aug 1964	47 mm16 Aug 1993	66 mm1993 · driest 0 mm in 1939	74
September	40.6°C1 Sep 1967	-6.7°C29 Sep 1985	25 mm2 Sep 1971	59 mm1940 · driest 0 mm in 2008	72
October	32.2°C1 Oct 1997	-15.0°C30 Oct 1935	41 mm14 Oct 1980	96 mm1980 · driest 0 mm in 1978	72
November	27.2°C2 Nov 1965	-25.0°C24 Nov 2010	37 mm19 Nov 1996	120 mm1998 · driest 0 mm in 2022	72
December	22.2°C5 Dec 1939	-30.6°C30 Dec 1968	34 mm6 Dec 1971	128 mm2014 · driest 0 mm in 2023	74

Typical days per month at PENDLETON BRANCH EXP STN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	22	1	3
February	0	0	20	<1	2
March	<1	0	18	1	1
April	1	0	10	1	<1
May	7	2	3	1	0
June	17	6	<1	1	0
July	29	22	0	<1	0
August	28	20	0	<1	0
September	18	8	1	<1	0
October	4	<1	10	<1	<1
November	0	0	17	1	1
December	0	0	23	1	4

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 82); on 2011–2025 it is September (81). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in PENDLETON BRANCH EXP STN’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%	32%	4%	42%	0.5–8.6°C
February	<1%	31%	3%	36%	5.4–10.8°C
March	5%	30%	3%	35%	10.6–14.8°C
April	22%	26%	4%	28%	14.7–19.0°C
May	50%	22%	3%	21%	18.8–23.7°C
June	78%	17%	3%	14%	23.3–28.6°C
July	95%	5%	<1%	2%	29.9–34.6°C
August	93%	7%	<1%	6%	28.6–33.3°C
September	80%	12%	1%	10%	22.9–28.1°C
October	35%	19%	3%	21%	16.4–20.9°C
November	2%	33%	4%	45%	6.5–12.4°C
December	<1%	33%	4%	43%	2.6–8.0°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.

1935Each stripe is one year’s mean temperature against the 59-year average. Warmest: 1958. Coolest: 1985.2024

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5710609
NOAA station: USC00356540 · PENDLETON BRANCH EXP STN
Station distance: 7.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 24 usable years
Daylight: Calculated from latitude 45.77°, 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 PENDLETON BRANCH EXP STN is what differs

Athena→Mission→Helix→Kirkpatrick→Cayuse→

Or put two places side by side: Adams vs Athena

Best time to visitAdams.

June

July

May

The whole year,without the guesswork.

Adams runs +0.5°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Adams.

The whole year,
without the guesswork.

Adams runs +0.5°C
on the 1961–1990 baseline.

Nearby, measured,
and named.