United States · 1991–2020

Best time to visit
Riverlea.

September leads for comfortable weather in Riverlea: typically 25.4°C by day, 12.9°C at night, with 81 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.4°C

Typical low12.9°C

Rain in September81 mm

Comfort

September

September · May · August

82climate match

Beach

July

July · August · June

75climate match

Outdoors

October

October · May · April

77climate match

The weakest month is January, scoring 5 against September’s 82 — days reach only 2.6°C, 21° 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

52.6° / -5.9°

Feb

54.3° / -4.8°

Mar

1610.2° / -0.4°

Apr

4717.6° / 5.2°

May

7423.2° / 11.1°

Jun

7027.5° / 15.8°

Jul

6529.2° / 17.9°

Aug

7128.6° / 16.9°

Sep

8225.4° / 12.9°

Oct

5718.1° / 6.6°

Nov

2611.1° / 1.1°

Dec

54.8° / -3.1°

Monthly climate evidence for Riverlea — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.6°C	-5.9°C	54 mm	7.1	9 h 37	5	Good coverage
February	4.3°C	-4.8°C	51 mm	7.3	10 h 37	5	Good coverage
March	10.2°C	-0.4°C	79 mm	8.3	11 h 49	16	Good coverage
April	17.6°C	5.2°C	91 mm	10	13 h 12	47	Good coverage
May	23.2°C	11.1°C	100 mm	11	14 h 22	74	Good coverage
June	27.5°C	15.8°C	111 mm	10.1	15 h 00	70	Good coverage
July	29.2°C	17.9°C	93 mm	8.6	14 h 45	65	Good coverage
August	28.6°C	16.9°C	80 mm	7.3	13 h 45	71	Good coverage
September	25.4°C	12.9°C	81 mm	7	12 h 24	82	Good coverage
October	18.1°C	6.6°C	69 mm	7.6	11 h 04	57	Good coverage
November	11.1°C	1.1°C	58 mm	7.1	9 h 54	26	Good coverage
December	4.8°C	-3.1°C	67 mm	7.5	9 h 20	5	Good coverage

Records at COLUMBUS OHIO STATE UNIV AP, 1997–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.6°C22 Jan 1999	-25.5°C28 Jan 2014	58 mm5 Jan 2005	212 mm2005 · driest 11 mm in 2025	29
February	24.4°C24 Feb 2017	-22.7°C24 Feb 2015	43 mm24 Feb 2018	118 mm2022 · driest 23 mm in 2015	29
March	30.0°C22 Mar 2026	-16.6°C6 Mar 2015	46 mm23 Mar 2007	171 mm2020 · driest 21 mm in 2001	29
April	29.4°C24 Apr 2025	-6.6°C2 Apr 2013	57 mm3 Apr 2018	154 mm2011 · driest 39 mm in 2008	29
May	33.9°C27 May 2012	-2.1°C9 May 2020	64 mm18 May 2020	172 mm2026 · driest 23 mm in 2007	29
June	37.2°C28 Jun 2012	4.4°C1 Jun 2020	74 mm23 Jun 2016	229 mm2008 · driest 7 mm in 1999	29
July	37.8°C7 Jul 2012	8.3°C2 Jul 2007	52 mm6 Jul 2022	204 mm2022 · driest 32 mm in 2008	29
August	37.8°C30 Aug 2024	7.2°C27 Aug 2025	59 mm31 Aug 2014	231 mm2003 · driest 17 mm in 2008	28
September	36.1°C2 Sep 2011	1.7°C29 Sep 2000	67 mm22 Sep 2021	209 mm2018 · driest 7 mm in 2023	28
October	33.3°C2 Oct 2019	-4.3°C30 Oct 2008	60 mm8 Oct 2017	135 mm2017 · driest 7 mm in 2024	28
November	26.7°C1 Nov 2016	-13.2°C13 Nov 2019	46 mm1 Nov 2018	130 mm2018 · driest 14 mm in 2009	29
December	22.2°C6 Dec 1998	-21.6°C23 Dec 2022	50 mm21 Dec 1998	114 mm2011 · driest 14 mm in 2010	29

Typical days per month at COLUMBUS OHIO STATE UNIV AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	25	2
February	0	0	23	2
March	<1	0	18	3
April	4	0	5	3
May	13	3	<1	3
June	23	10	0	4
July	29	14	0	3
August	28	11	0	3
September	18	5	0	3
October	5	<1	3	2
November	<1	0	14	2
December	0	0	23	2

How often, not how much — every day in COLUMBUS OHIO STATE UNIV AP’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%	22%	5%	22%	-0.8–6.0°C
February	1%	25%	6%	23%	0.2–8.4°C
March	9%	27%	9%	33%	7.6–15.0°C
April	27%	33%	11%	42%	15.7–19.9°C
May	50%	36%	11%	46%	20.7–25.8°C
June	66%	33%	13%	39%	26.0–29.0°C
July	71%	29%	12%	31%	27.7–31.5°C
August	76%	24%	9%	24%	27.3–30.2°C
September	70%	23%	8%	23%	23.4–27.9°C
October	35%	24%	7%	22%	16.5–20.6°C
November	8%	23%	7%	20%	7.9–14.0°C
December	<1%	25%	7%	25%	2.6–8.5°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.

1998Each stripe is one year’s mean temperature against the 28-year average. Warmest: 2024. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5168266
NOAA station: USW00004804 · COLUMBUS OHIO STATE UNIV AP
Station distance: 4.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 40.08°, 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 COLUMBUS OHIO STATE UNIV AP is what differs

Dublin→Hilliard→Worthington→Powell→Lake Darby→Shawnee Hills→

Or put two places side by side: Riverlea vs Dublin

Best time to visitRiverlea.