United States · 1991–2020

Best time to visit
Chester.

September leads for comfortable weather in Chester: typically 26.5°C by day, 11.9°C at night, with 67 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.5°C

Typical low11.9°C

Rain in September67 mm

Comfort

September

September · May · June

79climate match

Beach

August

August · June · July

71climate match

Outdoors

October

October · April · September

82climate match

The weakest month is January, scoring 5 against September’s 79 — days reach only 2.5°C, 21° below the 24°C the score treats as ideal, and nights drop to -9.8°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

52.5° / -9.8°

Feb

55.2° / -8.1°

Mar

2411.8° / -2.6°

Apr

5017.9° / 3.3°

May

6823.2° / 9.7°

Jun

6629.1° / 15.9°

Jul

5331.4° / 18.5°

Aug

6430.3° / 17.2°

Sep

7926.5° / 11.9°

Oct

6119.4° / 4.5°

Nov

2611.3° / -2.6°

Dec

54.5° / -7.8°

Monthly climate evidence for Chester — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.5°C	-9.8°C	21 mm	3.4	9 h 37	5	Strong coverage
February	5.2°C	-8.1°C	20 mm	3.3	10 h 37	5	Strong coverage
March	11.8°C	-2.6°C	45 mm	5.6	11 h 49	24	Strong coverage
April	17.9°C	3.3°C	68 mm	7.3	13 h 12	50	Strong coverage
May	23.2°C	9.7°C	132 mm	9.8	14 h 22	68	Strong coverage
June	29.1°C	15.9°C	115 mm	8.2	15 h	66	Strong coverage
July	31.4°C	18.5°C	118 mm	7.8	14 h 45	53	Strong coverage
August	30.3°C	17.2°C	91 mm	7.2	13 h 45	64	Strong coverage
September	26.5°C	11.9°C	67 mm	5.7	12 h 24	79	Strong coverage
October	19.4°C	4.5°C	59 mm	5.4	11 h 04	61	Strong coverage
November	11.3°C	-2.6°C	33 mm	3.6	9 h 55	26	Strong coverage
December	4.5°C	-7.8°C	26 mm	3.3	9 h 20	5	Strong coverage

What has changed

Chester runs +0.8°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

+1.8

Feb

+0.3

Mar

+2.2

Apr

-0.1

May

-0.1

Jun

+1.3

Jul

-0.9

Aug

-0.9

Sep

+1.8

Oct

+0.3

Nov

+1.7

Dec

+2.6

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

Records at HEBRON, 1893–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	25.6°C11 Jan 1990	-31.7°C8 Jan 1913	33 mm31 Jan 1998	54 mm1949 · driest 0 mm in 1981	134
February	26.7°C26 Feb 1896	-36.7°C12 Feb 1899	45 mm9 Feb 1966	76 mm1915 · driest 0 mm in 1930	133
March	36.1°C22 Mar 2026	-27.8°C11 Mar 1948	71 mm27 Mar 2004	219 mm1987 · driest 0 mm in 1910	132
April	37.8°C20 Apr 1902	-12.8°C3 Apr 1975	91 mm15 Apr 1900	182 mm1986 · driest 2 mm in 1989	133
May	38.9°C30 May 1934	-6.7°C4 May 1907	218 mm7 May 2015	372 mm1935 · driest 17 mm in 1921	134
June	43.3°C15 Jun 1946	3.3°C5 Jun 1930	191 mm23 Jun 2003	394 mm1908 · driest 8 mm in 2016	133
July	45.0°C15 Jul 1934	6.7°C30 Jul 1971	198 mm25 Jul 1992	424 mm2020 · driest 0 mm in 1934	134
August	43.3°C8 Aug 1934	4.4°C29 Aug 1946	116 mm3 Aug 1985	276 mm1977 · driest 0 mm in 1913	132
September	44.4°C3 Sep 1947	-3.9°C29 Sep 1984	167 mm18 Sep 1919	257 mm1973 · driest 6 mm in 2024	132
October	37.8°C5 Oct 1947	-12.8°C21 Oct 2006	112 mm20 Oct 1962	176 mm2002 · driest 0 mm in 1938	132
November	30.0°C9 Nov 2006	-23.9°C23 Nov 1898	102 mm11 Nov 1909	218 mm1909 · driest 0 mm in 1932	132
December	23.3°C6 Dec 1939	-32.2°C23 Dec 1989	48 mm24 Dec 1941	109 mm1913 · driest 0 mm in 1938	132

Typical days per month at HEBRON, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	4
February	<1	0	26	<1	4
March	2	<1	22	1	2
April	5	1	8	2	<1
May	13	4	<1	4	0
June	24	13	0	3	0
July	28	19	0	4	0
August	27	16	0	3	0
September	19	8	<1	2	0
October	7	1	7	2	<1
November	<1	0	21	1	2
December	0	0	29	<1	4

The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 81); on 2011–2025 it is September (80). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in HEBRON’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%	10%	1%	4%	-2.8–6.2°C
February	3%	12%	2%	7%	-0.2–9.4°C
March	15%	16%	4%	12%	6.3–15.3°C
April	36%	22%	8%	22%	15.1–20.7°C
May	54%	29%	12%	34%	20.5–26.2°C
June	70%	28%	12%	31%	26.0–31.4°C
July	78%	22%	9%	22%	29.4–34.7°C
August	78%	22%	8%	21%	28.3–34.0°C
September	72%	20%	8%	16%	23.7–29.2°C
October	49%	15%	5%	12%	16.8–22.9°C
November	11%	11%	3%	7%	7.7–14.0°C
December	<1%	10%	2%	5%	0.4–7.7°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.

1893Each stripe is one year’s mean temperature against the 127-year average. Warmest: 1934. Coolest: 1993.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5065590
NOAA station: USC00253735 · HEBRON
Station distance: 18.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 40.01°, 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 HEBRON is what differs

Hebron→Deshler→Davenport→Bruning→Alexandria→Daykin→

Or put two places side by side: Chester vs Hebron

Best time to visitChester.