United States · 1991–2020

Best time to visit
Cooper.

September leads for comfortable weather in Cooper: typically 25.9°C by day, 13.7°C at night, with 105 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.9°C

Typical low13.7°C

Rain in September105 mm

Comfort

September

September · May · August

78climate match

Beach

August

August · July · June

69climate match

Outdoors

October

October · April · May

80climate match

The weakest month is January, scoring 5 against September’s 78 — days reach only 7°C, 17° below the 24°C the score treats as ideal, and nights drop to -4.1°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

57° / -4.1°

Feb

59° / -2.9°

Mar

2114.4° / 1.5°

Apr

4920° / 5.9°

May

7224° / 11.6°

Jun

6327.8° / 15.9°

Jul

5828.9° / 17.8°

Aug

6428.8° / 17.3°

Sep

7825.9° / 13.7°

Oct

6320.4° / 6.8°

Nov

2914.3° / 1.3°

Dec

59.1° / -1.7°

Monthly climate evidence for Cooper — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	7°C	-4.1°C	127 mm	11	9 h 55	5	Good coverage
February	9°C	-2.9°C	127 mm	10.4	10 h 48	5	Good coverage
March	14.4°C	1.5°C	142 mm	11.4	11 h 51	21	Good coverage
April	20°C	5.9°C	141 mm	10.8	13 h 04	49	Good coverage
May	24°C	11.6°C	137 mm	11	14 h 05	72	Good coverage
June	27.8°C	15.9°C	148 mm	10.6	14 h 38	63	Good coverage
July	28.9°C	17.8°C	138 mm	10	14 h 25	58	Good coverage
August	28.8°C	17.3°C	116 mm	8.4	13 h 33	64	Good coverage
September	25.9°C	13.7°C	105 mm	7.5	12 h 22	78	Good coverage
October	20.4°C	6.8°C	82 mm	7.5	11 h 12	63	Good coverage
November	14.3°C	1.3°C	102 mm	8.6	10 h 11	29	Good coverage
December	9.1°C	-1.7°C	154 mm	11.5	9 h 41	5	Good coverage

Records at JAMESTOWN, 2003–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.8°C2 Jan 2022	-22.8°C16 Jan 2024	73 mm23 Jan 2006	195 mm2019 · driest 48 mm in 2016	23
February	25.6°C23 Feb 2023	-21.7°C20 Feb 2015	108 mm6 Feb 2004	334 mm2019 · driest 49 mm in 2007	22
March	28.9°C23 Mar 2026	-13.9°C6 Mar 2015	71 mm16 Mar 2025	238 mm2011 · driest 51 mm in 2026	23
April	30.6°C7 Apr 2010	-8.9°C8 Apr 2007	64 mm16 Apr 2011	268 mm2011 · driest 43 mm in 2026	23
May	31.7°C30 May 2006	-2.8°C9 May 2020	72 mm8 May 2024	285 mm2024 · driest 53 mm in 2015	22
June	39.4°C30 Jun 2012	5.6°C2 Jun 2012	102 mm28 Jun 2018	226 mm2026 · driest 45 mm in 2012	21
July	38.3°C1 Jul 2012	9.4°C1 Jul 2008	110 mm31 Jul 2024	279 mm2024 · driest 84 mm in 2019	22
August	37.8°C16 Aug 2007	7.2°C27 Aug 2025	122 mm19 Aug 2010	266 mm2020 · driest 30 mm in 2011	23
September	35.0°C3 Sep 2011	2.2°C24 Sep 2012	98 mm5 Sep 2011	227 mm2011 · driest 9 mm in 2019	22
October	33.3°C1 Oct 2019	-5.0°C26 Oct 2013	57 mm9 Oct 2017	240 mm2014 · driest 9 mm in 2024	22
November	27.2°C3 Nov 2016	-11.7°C28 Nov 2013	65 mm28 Nov 2011	204 mm2011 · driest 27 mm in 2012	23
December	23.9°C11 Dec 2007	-20.6°C23 Dec 2022	72 mm10 Dec 2008	236 mm2018 · driest 67 mm in 2017	23

Typical days per month at JAMESTOWN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	22	4	3
February	0	0	20	4	3
March	2	0	14	4	2
April	7	<1	5	5	<1
May	16	2	<1	4	0
June	23	8	0	5	0
July	28	13	0	5	0
August	28	12	0	4	0
September	19	6	0	3	0
October	7	<1	4	3	0
November	<1	0	14	4	<1
December	0	0	20	5	2

How often, not how much — every day in JAMESTOWN’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%	35%	14%	49%	3.7–9.7°C
February	3%	37%	14%	51%	5.9–13.6°C
March	18%	36%	15%	46%	12.1–18.6°C
April	40%	35%	14%	48%	18.1–22.5°C
May	53%	35%	14%	46%	22.4–25.8°C
June	67%	32%	14%	38%	26.9–29.0°C
July	65%	33%	15%	41%	27.1–30.3°C
August	70%	27%	12%	29%	27.1–30.0°C
September	71%	26%	11%	28%	24.2–28.1°C
October	48%	23%	9%	26%	19.0–22.4°C
November	14%	29%	12%	37%	11.2–16.8°C
December	2%	34%	15%	47%	7.2–12.3°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4615252
NOAA station: USC00404590 · JAMESTOWN
Station distance: 13 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 17 usable years
Daylight: Calculated from latitude 36.42°, 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 JAMESTOWN is what differs

Jamestown→Boatland→Cooktown→East Jamestown→Fairview→Glenobey→

Or put two places side by side: Cooper vs Jamestown

Best time to visitCooper.