United States · 1991–2020

Best time to visit
Keyes.

October leads for comfortable weather in Keyes: typically 23°C by day, 4.8°C at night, with 41 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high23°C

Typical low4.8°C

Rain in October41 mm

Comfort

October

October · May · September

78climate match

Beach

September

September · June · August

73climate match

Outdoors

April

April · October · March

82climate match

The weakest month is January, scoring 18 against October’s 78 — days reach only 10.8°C, 13° below the 24°C the score treats as ideal, and nights drop to -6.3°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

1810.8° / -6.3°

Feb

2712.9° / -5.3°

Mar

5017.7° / -1.4°

Apr

7021.7° / 3.2°

May

7626.7° / 8.8°

Jun

6732° / 14.3°

Jul

5434.1° / 17.1°

Aug

6032.4° / 16.4°

Sep

7629.1° / 12°

Oct

7823° / 4.8°

Nov

4416.1° / -1.6°

Dec

1810.5° / -5.9°

Monthly climate evidence for Keyes — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	10.8°C	-6.3°C	12 mm	2.2	9 h 54	18	Strong coverage
February	12.9°C	-5.3°C	10 mm	2	10 h 47	27	Strong coverage
March	17.7°C	-1.4°C	28 mm	2.9	11 h 51	50	Strong coverage
April	21.7°C	3.2°C	38 mm	3.8	13 h 05	70	Strong coverage
May	26.7°C	8.8°C	50 mm	5.2	14 h 07	76	Good coverage
June	32°C	14.3°C	60 mm	5.2	14 h 40	67	Strong coverage
July	34.1°C	17.1°C	74 mm	6.5	14 h 27	54	Strong coverage
August	32.4°C	16.4°C	85 mm	5.7	13 h 34	60	Strong coverage
September	29.1°C	12°C	43 mm	3.4	12 h 22	76	Strong coverage
October	23°C	4.8°C	41 mm	3	11 h 11	78	Strong coverage
November	16.1°C	-1.6°C	15 mm	2.3	10 h 09	44	Strong coverage
December	10.5°C	-5.9°C	19 mm	2.5	9 h 39	18	Good coverage

Records at BOISE CITY 2 E, 1908–2020
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	26.7°C26 Jan 1951	-31.1°C4 Jan 1959	37 mm8 Jan 1939	47 mm2001 · driest 0 mm in 1964	106
February	30.0°C10 Feb 2017	-26.7°C8 Feb 1933	31 mm20 Feb 1990	54 mm1964 · driest 0 mm in 2000	107
March	32.8°C28 Mar 1910	-24.4°C12 Mar 1932	51 mm24 Mar 2007	119 mm2000 · driest 0 mm in 1908	105
April	36.1°C22 Apr 1965	-14.4°C2 Apr 1936	77 mm15 Apr 2016	181 mm1952 · driest 0 mm in 1935	104
May	38.9°C30 May 2000	-6.7°C3 May 2013	78 mm31 May 1988	219 mm1941 · driest 3 mm in 1974	102
June	42.8°C29 Jun 1998	1.7°C6 Jun 1915	120 mm25 Jun 1996	228 mm1989 · driest 0 mm in 1910	104
July	42.2°C13 Jul 1913	6.7°C5 Jul 1931	109 mm31 Jul 2015	262 mm2015 · driest 0 mm in 2002	104
August	41.7°C3 Aug 1924	4.4°C29 Aug 1915	99 mm30 Aug 1986	195 mm2008 · driest 8 mm in 1938	105
September	40.6°C5 Sep 1995	-3.9°C30 Sep 1985	64 mm21 Sep 2004	141 mm1960 · driest 0 mm in 2000	103
October	35.6°C3 Oct 2000	-13.9°C30 Oct 2019	93 mm11 Oct 1930	248 mm1930 · driest 0 mm in 1980	106
November	31.1°C28 Nov 2014	-21.7°C28 Nov 1976	53 mm1 Nov 1948	120 mm1909 · driest 0 mm in 1995	105
December	28.9°C23 Dec 1955	-27.2°C24 Dec 1924	33 mm30 Dec 2006	77 mm2006 · driest 0 mm in 1952	103

Typical days per month at BOISE CITY 2 E, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	<1	0	29	<1	3
February	<1	<1	25	<1	2
March	4	<1	20	1	2
April	11	2	7	1	<1
May	21	10	<1	2	<1
June	28	21	0	2	0
July	30	27	0	2	0
August	29	24	0	3	0
September	25	14	<1	1	0
October	13	4	5	1	<1
November	3	<1	19	<1	1
December	<1	0	28	<1	3

How often, not how much — every day in BOISE CITY 2 E’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	7%	7%	<1%	2%	5.2–13.1°C
February	14%	9%	<1%	5%	7.5–15.9°C
March	36%	11%	3%	6%	11.8–19.8°C
April	61%	13%	4%	8%	17.7–24.4°C
May	72%	19%	7%	19%	22.8–28.6°C
June	81%	19%	7%	16%	28.6–34.0°C
July	80%	21%	7%	19%	31.9–35.9°C
August	81%	19%	7%	14%	30.5–34.7°C
September	83%	13%	5%	9%	26.2–30.8°C
October	69%	10%	4%	5%	19.5–25.4°C
November	29%	8%	2%	3%	11.7–18.4°C
December	8%	7%	1%	3%	5.7–12.9°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.

1909Each stripe is one year’s mean temperature against the 90-year average. Warmest: 1934. Coolest: 1912.2016

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5515783
NOAA station: USC00340908 · BOISE CITY 2 E
Station distance: 22.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 24 usable years
Daylight: Calculated from latitude 36.81°, 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 BOISE CITY 2 E is what differs

Boise City→Felt→Burton→Conrad→Wheeless→Coldwater→

Or put two places side by side: Keyes vs Boise City

Best time to visitKeyes.