United States · 1991–2020

Best time to visit
Marienville.

September leads for comfortable weather in Marienville: typically 23.5°C by day, 10.8°C at night, with 102 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.5°C

Typical low10.8°C

Rain in September102 mm

Comfort

September

September · August · June

76climate match

Beach

August

August · July · June

59climate match

Outdoors

September

September · May · October

69climate match

The weakest month is January, scoring 5 against September’s 76 — days reach only 1.2°C, 23° 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

51.2° / -8.2°

Feb

52.8° / -8.3°

Mar

57.8° / -4.4°

Apr

2915.5° / 1.3°

May

6021.7° / 7.3°

Jun

6925.9° / 12.9°

Jul

6628° / 15.2°

Aug

7327.4° / 14.6°

Sep

7623.5° / 10.8°

Oct

4216.9° / 4.7°

Nov

109.8° / -0.6°

Dec

53.7° / -4.7°

Monthly climate evidence for Marienville — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	1.2°C	-8.2°C	86 mm	13.7	9 h 29	5	Strong coverage
February	2.8°C	-8.3°C	64 mm	10.7	10 h 32	5	Strong coverage
March	7.8°C	-4.4°C	87 mm	11.2	11 h 48	5	Strong coverage
April	15.5°C	1.3°C	105 mm	12.2	13 h 16	29	Strong coverage
May	21.7°C	7.3°C	110 mm	11.7	14 h 29	60	Strong coverage
June	25.9°C	12.9°C	131 mm	11.5	15 h 09	69	Strong coverage
July	28°C	15.2°C	130 mm	10.6	14 h 54	66	Strong coverage
August	27.4°C	14.6°C	104 mm	9.2	13 h 50	73	Strong coverage
September	23.5°C	10.8°C	102 mm	9	12 h 25	76	Strong coverage
October	16.9°C	4.7°C	96 mm	11.5	11 h 01	42	Strong coverage
November	9.8°C	-0.6°C	86 mm	11.4	9 h 47	10	Strong coverage
December	3.7°C	-4.7°C	85 mm	12.6	9 h 11	5	Strong coverage

What has changed

Marienville runs +1.9°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

+2.0

Feb

+2.8

Mar

+2.1

Apr

+1.8

May

+1.9

Jun

+1.3

Jul

+1.9

Aug

+1.5

Sep

+2.1

Oct

+1.8

Nov

+1.0

Dec

+2.9

September daytime highs, 2011–2025. Last recorded: 25.4°C.

Records at TIONESTA 2 SE LAKE, 1921–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.2°C26 Jan 1950	-33.3°C31 Jan 1948	49 mm8 Jan 1998	182 mm2005 · driest 18 mm in 1983	82
February	23.9°C25 Feb 2017	-32.8°C27 Feb 1963	48 mm22 Feb 2021	139 mm1950 · driest 15 mm in 1969	83
March	28.9°C24 Mar 2012	-25.6°C9 Mar 1960	57 mm24 Mar 1953	179 mm2008 · driest 28 mm in 1988	81
April	31.7°C29 Apr 1990	-19.4°C1 Apr 1923	71 mm12 Apr 2024	219 mm2024 · driest 26 mm in 2012	84
May	34.4°C30 May 2018	-6.1°C10 May 1947	77 mm21 May 2004	283 mm1953 · driest 28 mm in 1993	83
June	36.1°C17 Jun 1952	-1.7°C5 Jun 1990	74 mm9 Jun 1981	277 mm1972 · driest 10 mm in 1923	83
July	38.9°C23 Jul 2011	3.9°C2 Jul 2001	98 mm22 Jul 2003	314 mm2006 · driest 23 mm in 1997	82
August	37.2°C28 Aug 1993	1.1°C29 Aug 1982	120 mm14 Aug 1994	229 mm1994 · driest 15 mm in 1951	82
September	36.1°C3 Sep 1953	-4.4°C25 Sep 1990	110 mm9 Sep 2004	223 mm2004 · driest 13 mm in 1959	83
October	31.1°C5 Oct 1922	-11.7°C16 Oct 2006	120 mm16 Oct 1954	259 mm1954 · driest 7 mm in 1963	84
November	26.7°C2 Nov 1950	-17.8°C28 Nov 1950	67 mm12 Nov 2022	258 mm1985 · driest 25 mm in 1943	84
December	22.2°C4 Dec 1982	-30.0°C22 Dec 1944	71 mm1 Dec 2010	173 mm1990 · driest 18 mm in 1955	84

Typical days per month at TIONESTA 2 SE LAKE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	3	10
February	0	0	25	2	8
March	<1	0	23	3	4
April	2	<1	13	4	1
May	10	2	3	4	0
June	19	6	0	4	0
July	26	10	0	4	0
August	24	8	0	3	0
September	12	3	<1	3	0
October	3	<1	5	3	<1
November	<1	0	17	3	2
December	0	0	24	3	7

The best month has moved. On the 1961–1990 numbers the strongest month here was August (scoring 79); on 2011–2025 it is September (86). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in TIONESTA 2 SE LAKE’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%	38%	7%	52%	-2.6–4.5°C
February	<1%	36%	7%	49%	-1.1–5.5°C
March	4%	37%	9%	53%	3.9–11.6°C
April	16%	40%	12%	56%	12.2–17.6°C
May	40%	38%	13%	52%	18.2–24.0°C
June	58%	36%	13%	47%	23.7–27.3°C
July	68%	32%	13%	38%	25.9–29.8°C
August	69%	29%	10%	35%	25.1–28.8°C
September	55%	30%	11%	39%	21.3–25.2°C
October	25%	34%	9%	44%	14.2–19.5°C
November	4%	38%	9%	53%	6.4–12.2°C
December	<1%	39%	8%	56%	-0.6–6.2°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.

1944Each stripe is one year’s mean temperature against the 66-year average. Warmest: 2012. Coolest: 1958.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5199876
NOAA station: USC00368873 · TIONESTA 2 SE LAKE
Station distance: 26.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 41.47°, 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 TIONESTA 2 SE LAKE is what differs

Tidioute→Tionesta→Tylersburg→Crown→Leeper→Vowinckel→

Or put two places side by side: Marienville vs Tidioute

Best time to visitMarienville.

September

August

September

The whole year,without the guesswork.

Marienville runs +1.9°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Marienville.

The whole year,
without the guesswork.

Marienville runs +1.9°C
on the 1961–1990 baseline.

Nearby, measured,
and named.