United States · 1991–2020

Best time to visit
Sunbury.

September leads for comfortable weather in Sunbury: typically 25.9°C by day, 13.1°C at night, with 82 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.9°C

Typical low13.1°C

Rain in September82 mm

Comfort

September

September · May · August

80climate match

Beach

August

August · July · June

74climate match

Outdoors

October

October · April · May

79climate match

The weakest month is January, scoring 5 against September’s 80 — days reach only 2.9°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

52.9° / -5.7°

Feb

55.3° / -4.6°

Mar

1811.2° / -0.2°

Apr

5018.8° / 5.4°

May

7523.9° / 11.2°

Jun

6528.2° / 16°

Jul

5929.6° / 18°

Aug

6828.9° / 17.1°

Sep

8025.9° / 13.1°

Oct

6019.4° / 6.9°

Nov

2411.7° / 1.4°

Dec

55.4° / -2.9°

Monthly climate evidence for Sunbury — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.9°C	-5.7°C	75 mm	9.3	9 h 36	5	Strong coverage
February	5.3°C	-4.6°C	60 mm	8.3	10 h 36	5	Strong coverage
March	11.2°C	-0.2°C	86 mm	9.4	11 h 49	18	Strong coverage
April	18.8°C	5.4°C	99 mm	10.8	13 h 13	50	Strong coverage
May	23.9°C	11.2°C	107 mm	11.3	14 h 23	75	Strong coverage
June	28.2°C	16°C	128 mm	9.8	15 h 01	65	Strong coverage
July	29.6°C	18°C	116 mm	9.6	14 h 46	59	Strong coverage
August	28.9°C	17.1°C	93 mm	7.7	13 h 46	68	Strong coverage
September	25.9°C	13.1°C	82 mm	7.2	12 h 24	80	Strong coverage
October	19.4°C	6.9°C	75 mm	8.5	11 h 04	60	Strong coverage
November	11.7°C	1.4°C	73 mm	8.7	9 h 53	24	Strong coverage
December	5.4°C	-2.9°C	78 mm	8.8	9 h 19	5	Strong coverage

What has changed

Sunbury runs +0.9°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

+1.1

Feb

+2.0

Mar

+1.3

Apr

+1.0

May

+0.8

Jun

+0.4

Jul

+0.2

Aug

0.0

Sep

+0.8

Oct

+0.6

Nov

+0.2

Dec

+2.2

September daytime highs, 2011–2025. Last recorded: 27.6°C.

Records at WESTERVILLE, 1952–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C11 Jan 2020	-32.8°C28 Jan 1963	117 mm21 Jan 1959	238 mm2005 · driest 10 mm in 1981	73
February	25.0°C20 Feb 2018	-31.7°C6 Feb 1977	53 mm23 Feb 1975	165 mm2022 · driest 7 mm in 1968	73
March	29.4°C22 Mar 2026	-23.3°C1 Mar 1967	108 mm9 Mar 1964	277 mm1964 · driest 2 mm in 1969	73
April	31.1°C27 Apr 1986	-10.6°C1 Apr 1964	98 mm12 Apr 1981	185 mm1981 · driest 20 mm in 1971	74
May	35.0°C18 May 1962	-5.0°C10 May 1966	95 mm19 May 2020	224 mm1968 · driest 38 mm in 1977	75
June	37.8°C25 Jun 1988	-1.1°C5 Jun 2000	105 mm20 Jun 1973	222 mm1973 · driest 24 mm in 1991	74
July	38.9°C14 Jul 1954	5.0°C1 Jul 1988	114 mm11 Jul 1969	244 mm1990 · driest 12 mm in 1982	73
August	38.3°C20 Aug 1983	2.2°C29 Aug 1982	90 mm7 Aug 1976	212 mm2005 · driest 9 mm in 2025	73
September	38.3°C2 Sep 1953	-1.7°C23 Sep 1974	138 mm14 Sep 1979	236 mm2018 · driest 9 mm in 1978	73
October	33.9°C2 Oct 2019	-8.9°C21 Oct 1952	93 mm1 Oct 1977	156 mm2006 · driest 2 mm in 1963	73
November	27.2°C1 Nov 2016	-22.8°C30 Nov 1958	60 mm6 Nov 2017	251 mm1985 · driest 11 mm in 1976	73
December	24.4°C3 Dec 1982	-31.7°C22 Dec 1989	45 mm30 Dec 1990	184 mm1990 · driest 8 mm in 1958	72

Typical days per month at WESTERVILLE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	25	2	6
February	0	0	22	2	5
March	<1	0	17	3	2
April	5	<1	5	4	<1
May	14	4	<1	4	0
June	25	11	0	4	0
July	29	15	0	4	0
August	28	12	0	3	0
September	19	6	0	3	0
October	6	<1	3	2	0
November	<1	0	13	3	<1
December	0	0	23	3	3

How often, not how much — every day in WESTERVILLE’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%	27%	7%	31%	-0.8–6.2°C
February	<1%	27%	6%	31%	1.0–8.7°C
March	11%	30%	9%	36%	8.0–14.8°C
April	29%	36%	11%	47%	15.8–21.0°C
May	51%	35%	12%	47%	21.2–26.8°C
June	68%	31%	13%	37%	26.3–29.6°C
July	70%	30%	12%	36%	28.2–31.7°C
August	75%	25%	10%	26%	27.5–30.6°C
September	71%	24%	8%	24%	24.0–28.1°C
October	39%	25%	7%	28%	17.5–21.8°C
November	8%	30%	9%	34%	8.5–14.5°C
December	<1%	28%	8%	32%	1.6–8.7°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.

1953Each stripe is one year’s mean temperature against the 69-year average. Warmest: 2024. Coolest: 1978.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5173412
NOAA station: USC00338951 · WESTERVILLE
Station distance: 14.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 40.24°, 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 WESTERVILLE is what differs

Westerville→Lewis Center→Huber Ridge→Minerva Park→Galena→Kilbourne→

Or put two places side by side: Sunbury vs Westerville

Best time to visitSunbury.