United States · 1991–2020

Best time to visit
Plessis.

August leads for comfortable weather in Plessis: typically 26.6°C by day, 15.3°C at night, with 89 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high26.6°C

Typical low15.3°C

Rain in August89 mm

Comfort

August

August · September · June

79climate match

Beach

July

July · August · June

71climate match

Outdoors

September

September · May · October

77climate match

The weakest month is January, scoring 5 against August’s 79 — days reach only -4.6°C, 29° 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

5-4.6° / -14.5°

Feb

5-2.1° / -12.2°

Mar

55.2° / -5.6°

Apr

2813.5° / 1°

May

5720.3° / 8.3°

Jun

7425.9° / 14.4°

Jul

7328° / 16.6°

Aug

7926.6° / 15.3°

Sep

7723° / 10.1°

Oct

4215.3° / 2.8°

Nov

56.1° / -4.8°

Dec

5-1.8° / -11°

Monthly climate evidence for Plessis — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-4.6°C	-14.5°C	23 mm	4.9	9 h 18	5	Strong coverage
February	-2.1°C	-12.2°C	28 mm	4.7	10 h 26	5	Strong coverage
March	5.2°C	-5.6°C	47 mm	6.1	11 h 47	5	Strong coverage
April	13.5°C	1°C	86 mm	8.3	13 h 20	28	Strong coverage
May	20.3°C	8.3°C	114 mm	11.7	14 h 39	57	Strong coverage
June	25.9°C	14.4°C	123 mm	9.9	15 h 22	74	Strong coverage
July	28°C	16.6°C	86 mm	7	15 h 05	73	Strong coverage
August	26.6°C	15.3°C	89 mm	7.6	13 h 57	79	Strong coverage
September	23°C	10.1°C	84 mm	7.2	12 h 27	77	Strong coverage
October	15.3°C	2.8°C	63 mm	6.4	10 h 57	42	Strong coverage
November	6.1°C	-4.8°C	40 mm	4.5	9 h 38	5	Strong coverage
December	-1.8°C	-11°C	29 mm	5	9 h	5	Strong coverage

What has changed

Plessis runs -0.0°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

+0.6

Feb

-0.9

Mar

+1.0

Apr

-1.5

May

-1.4

Jun

0.0

Jul

-0.8

Aug

-0.9

Sep

+1.4

Oct

-0.3

Nov

+0.9

Dec

+1.8

August daytime highs, 2011–2025. Last recorded: 26.7°C.

Records at SANBORN, 1914–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.3°C27 Jan 2002	-36.1°C15 Jan 1972	34 mm31 Jan 1926	68 mm1926 · driest 0 mm in 1928	110
February	20.6°C27 Feb 2024	-37.2°C2 Feb 1917	34 mm1 Feb 1922	80 mm1919 · driest 0 mm in 2026	111
March	31.1°C22 Mar 2026	-28.9°C11 Mar 1948	64 mm16 Mar 1917	112 mm1965 · driest 1 mm in 1994	110
April	33.3°C30 Apr 1926	-16.1°C3 Apr 1936	66 mm29 Apr 1947	176 mm1927 · driest 9 mm in 1926	111
May	41.7°C30 May 1934	-8.9°C3 May 1967	128 mm26 May 2013	276 mm2013 · driest 5 mm in 1934	112
June	38.9°C10 Jun 1933	1.1°C9 Jun 1915	150 mm14 Jun 2018	380 mm2018 · driest 14 mm in 2012	112
July	43.3°C17 Jul 1936	3.3°C30 Jul 1971	168 mm22 Jul 2010	279 mm2010 · driest 9 mm in 2006	112
August	42.2°C3 Aug 1930	1.1°C24 Aug 1934	104 mm6 Aug 1995	263 mm1974 · driest 16 mm in 1999	112
September	39.4°C3 Sep 1925	-5.6°C30 Sep 1939	164 mm20 Sep 2018	281 mm2004 · driest 6 mm in 1940	112
October	33.3°C5 Oct 1963	-16.7°C28 Oct 1925	78 mm7 Oct 2017	169 mm2019 · driest 0 mm in 1952	112
November	25.0°C9 Nov 1999	-26.7°C14 Nov 1959	72 mm12 Nov 2015	156 mm2015 · driest 0 mm in 1939	112
December	18.3°C6 Dec 1939	-33.9°C22 Dec 1989	48 mm25 Dec 1945	92 mm1945 · driest 1 mm in 1943	112

Typical days per month at SANBORN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	31	<1	5
February	0	0	28	<1	5
March	<1	0	26	2	3
April	2	<1	13	3	2
May	8	2	1	4	<1
June	19	7	0	4	0
July	25	10	0	3	0
August	22	5	0	3	0
September	13	2	<1	2	0
October	3	<1	11	2	<1
November	<1	0	25	1	3
December	0	0	31	1	5

The best month has moved. On the 1961–1990 numbers the strongest month here was August (scoring 80); on 2011–2025 it is September (88). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in SANBORN’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%	13%	1%	6%	-8.7–0.7°C
February	0%	14%	2%	8%	-6.3–3.2°C
March	4%	18%	5%	15%	0.8–10.0°C
April	20%	26%	9%	29%	10.8–17.8°C
May	45%	32%	11%	41%	18.7–24.4°C
June	65%	32%	12%	38%	24.4–28.9°C
July	76%	24%	9%	24%	27.1–31.5°C
August	75%	24%	9%	24%	25.6–30.1°C
September	60%	24%	9%	25%	20.7–25.7°C
October	30%	18%	5%	15%	13.5–19.5°C
November	3%	14%	4%	9%	2.5–9.7°C
December	0%	13%	3%	8%	-5.6–2.3°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.

1915Each stripe is one year’s mean temperature against the 107-year average. Warmest: 1931. Coolest: 1996.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4871654
NOAA station: USC00137386 · SANBORN
Station distance: 11 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 43.23°, 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 SANBORN is what differs

Hartley→Sanborn→Melvin→Archer→Max→

Or put two places side by side: Plessis vs Hartley

Best time to visitPlessis.