United States · 1991–2020

Best time to visit
Marion.

September leads for comfortable weather in Marion: typically 27.8°C by day, 14.1°C at night, with 89 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high27.8°C

Typical low14.1°C

Rain in September89 mm

Comfort

September

September · May · October

76climate match

Beach

June

June · August · July

69climate match

Outdoors

October

October · April · November

85climate match

The weakest month is January, scoring 5 against September’s 76 — days reach only 4.7°C, 19° below the 24°C the score treats as ideal, and nights drop to -6.8°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

54.7° / -6.8°

Feb

87.3° / -5°

Mar

3413.4° / 0.3°

Apr

5819° / 5.9°

May

7524.5° / 12.3°

Jun

6030.1° / 17.7°

Jul

4633.1° / 20.2°

Aug

5332.3° / 19.1°

Sep

7627.8° / 14.1°

Oct

7021° / 7.1°

Nov

3612.8° / 0.3°

Dec

66.2° / -4.8°

Monthly climate evidence for Marion — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	4.7°C	-6.8°C	20 mm	2.8	9 h 46	5	Strong coverage
February	7.3°C	-5°C	30 mm	3.3	10 h 42	8	Strong coverage
March	13.4°C	0.3°C	54 mm	4.9	11 h 50	34	Strong coverage
April	19°C	5.9°C	80 mm	6.7	13 h 08	58	Strong coverage
May	24.5°C	12.3°C	133 mm	8.4	14 h 14	75	Strong coverage
June	30.1°C	17.7°C	117 mm	7.2	14 h 49	60	Strong coverage
July	33.1°C	20.2°C	109 mm	7.3	14 h 35	46	Strong coverage
August	32.3°C	19.1°C	101 mm	6.6	13 h 39	53	Strong coverage
September	27.8°C	14.1°C	89 mm	5.6	12 h 23	76	Strong coverage
October	21°C	7.1°C	62 mm	5.2	11 h 08	70	Strong coverage
November	12.8°C	0.3°C	36 mm	3.1	10 h 02	36	Strong coverage
December	6.2°C	-4.8°C	29 mm	3.2	9 h 30	6	Strong coverage

What has changed

Marion runs +1.3°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

+2.2

Feb

+0.9

Mar

+1.9

Apr

+0.4

May

+1.0

Jun

+1.6

Jul

+0.2

Aug

+0.2

Sep

+1.7

Oct

+1.3

Nov

+1.5

Dec

+2.8

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

Records at MARION RSVR, 1966–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C25 Jan 1981	-26.7°C31 Jan 1979	38 mm5 Jan 2005	73 mm1999 · driest 0 mm in 2012	61
February	26.7°C23 Feb 2017	-28.9°C10 Feb 2011	49 mm24 Feb 2001	108 mm2001 · driest 0 mm in 2006	61
March	32.8°C22 Mar 2026	-20.6°C4 Mar 1978	69 mm29 Mar 2017	261 mm1973 · driest 0 mm in 1997	59
April	35.0°C27 Apr 1989	-11.7°C3 Apr 1975	149 mm24 Apr 2008	216 mm2008 · driest 6 mm in 1982	60
May	36.7°C31 May 1998	-3.3°C2 May 1967	110 mm8 May 2019	327 mm2019 · driest 4 mm in 1994	60
June	40.6°C30 Jun 1990	5.6°C1 Jun 1982	122 mm13 Jun 2010	362 mm1967 · driest 19 mm in 2016	60
July	43.3°C28 Jul 2011	7.8°C8 Jul 1985	125 mm4 Jul 2016	320 mm1993 · driest 0 mm in 1984	61
August	42.8°C29 Aug 1984	8.3°C27 Aug 1967	112 mm14 Aug 1975	234 mm2013 · driest 0 mm in 1970	60
September	41.7°C3 Sep 2000	-2.2°C30 Sep 1984	119 mm24 Sep 1998	232 mm1998 · driest 9 mm in 1980	60
October	36.1°C2 Oct 2006	-10.0°C31 Oct 1993	100 mm10 Oct 1985	205 mm2002 · driest 0 mm in 1999	60
November	28.3°C9 Nov 1980	-15.6°C13 Nov 1986	89 mm1 Nov 1998	165 mm1992 · driest 0 mm in 2020	60
December	23.3°C16 Dec 2021	-31.1°C24 Dec 1989	55 mm11 Dec 2007	92 mm2007 · driest 0 mm in 2021	60

Typical days per month at MARION RSVR, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	<1	1
February	<1	0	24	<1	<1
March	2	0	16	2	<1
April	6	<1	4	3	<1
May	16	5	<1	4	0
June	27	17	0	4	0
July	30	25	0	3	0
August	30	23	0	3	0
September	22	12	0	2	0
October	9	2	3	2	<1
November	<1	0	15	<1	<1
December	0	0	26	<1	<1

How often, not how much — every day in MARION RSVR’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%	9%	2%	4%	-0.2–7.6°C
February	5%	10%	3%	5%	1.9–12.2°C
March	20%	16%	6%	15%	9.5–16.4°C
April	41%	21%	9%	20%	16.7–21.8°C
May	60%	27%	12%	31%	21.7–26.4°C
June	75%	25%	13%	25%	27.5–31.8°C
July	79%	21%	9%	19%	30.7–35.4°C
August	80%	20%	9%	17%	29.6–35.2°C
September	76%	19%	8%	17%	24.8–30.5°C
October	53%	17%	7%	16%	18.5–22.8°C
November	14%	12%	3%	6%	9.5–15.5°C
December	1%	10%	3%	4%	3.0–8.8°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.

1966Each stripe is one year’s mean temperature against the 58-year average. Warmest: 2016. Coolest: 1979.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4275070
NOAA station: USC00145039 · MARION RSVR
Station distance: 6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 38.35°, 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 MARION RSVR is what differs

Hillsboro→Lincolnville→Lehigh→Durham→Tampa→Antelope→

Or put two places side by side: Marion vs Hillsboro

Best time to visitMarion.