United States · 1991–2020

Best time to visit
Belleville.

September leads for comfortable weather in Belleville: typically 24.8°C by day, 12.1°C at night, with 112 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.8°C

Typical low12.1°C

Rain in September112 mm

Comfort

September

September · June · August

77climate match

Beach

July

July · August · June

71climate match

Outdoors

October

October · May · September

70climate match

The weakest month is January, scoring 5 against September’s 77 — days reach only 2.7°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

52.7° / -6.1°

Feb

54.6° / -5.4°

Mar

109.6° / -1.5°

Apr

4216.9° / 3.8°

May

6822.5° / 9.5°

Jun

7427° / 14.6°

Jul

6429.5° / 17°

Aug

6928.6° / 16.3°

Sep

7724.8° / 12.1°

Oct

5118.2° / 5.8°

Nov

2211.4° / 0.6°

Dec

55.2° / -3.2°

Monthly climate evidence for Belleville — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.7°C	-6.1°C	74 mm	8.8	9 h 34	5	Strong coverage
February	4.6°C	-5.4°C	57 mm	7.1	10 h 35	5	Strong coverage
March	9.6°C	-1.5°C	87 mm	9	11 h 49	10	Strong coverage
April	16.9°C	3.8°C	90 mm	10.7	13 h 14	42	Strong coverage
May	22.5°C	9.5°C	107 mm	11.1	14 h 25	68	Strong coverage
June	27°C	14.6°C	100 mm	9.8	15 h 04	74	Strong coverage
July	29.5°C	17°C	94 mm	9.1	14 h 48	64	Strong coverage
August	28.6°C	16.3°C	92 mm	8.7	13 h 47	69	Strong coverage
September	24.8°C	12.1°C	112 mm	8.1	12 h 25	77	Strong coverage
October	18.2°C	5.8°C	96 mm	8.6	11 h 03	51	Strong coverage
November	11.4°C	0.6°C	78 mm	7.7	9 h 52	22	Strong coverage
December	5.2°C	-3.2°C	84 mm	8.6	9 h 17	5	Strong coverage

What has changed

Belleville runs +0.6°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

+0.8

Feb

+1.5

Mar

+0.6

Apr

+0.5

May

0.0

Jun

+0.1

Jul

+1.0

Aug

-0.1

Sep

+0.6

Oct

+0.7

Nov

+0.3

Dec

+1.7

September daytime highs, 2011–2025. Last recorded: 25.7°C.

Records at LEWISTOWN, 1938–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.2°C26 Jan 1967	-27.2°C20 Jan 1994	71 mm4 Jan 1944	168 mm1996 · driest 3 mm in 1981	88
February	25.6°C25 Feb 2017	-25.6°C1 Feb 1948	72 mm14 Feb 1984	156 mm1984 · driest 8 mm in 1941	88
March	30.6°C31 Mar 1998	-16.1°C7 Mar 1989	83 mm2 Mar 1994	193 mm1994 · driest 16 mm in 1949	88
April	34.4°C28 Apr 2009	-9.4°C7 Apr 1982	60 mm16 Apr 1993	236 mm1993 · driest 8 mm in 1971	87
May	36.1°C16 May 1962	-3.3°C8 May 1983	96 mm16 May 2014	221 mm2025 · driest 16 mm in 1977	87
June	38.9°C27 Jun 1952	2.8°C6 Jun 1945	90 mm22 Jun 1972	242 mm1972 · driest 21 mm in 1966	87
July	41.1°C23 Jul 2011	5.0°C9 Jul 1980	71 mm22 Jul 2018	330 mm1989 · driest 20 mm in 1962	88
August	39.4°C27 Aug 1948	3.3°C31 Aug 1976	70 mm3 Aug 1961	246 mm1955 · driest 13 mm in 1957	85
September	39.4°C3 Sep 1953	-2.2°C26 Sep 1943	137 mm18 Sep 2004	345 mm2011 · driest 9 mm in 1984	87
October	35.0°C7 Oct 1941	-6.1°C23 Oct 1944	100 mm1 Oct 2010	218 mm1976 · driest 1 mm in 1963	86
November	29.4°C2 Nov 1950	-14.4°C27 Nov 1938	90 mm27 Nov 1993	216 mm1985 · driest 12 mm in 1981	86
December	23.9°C29 Dec 1984	-26.7°C24 Dec 1960	63 mm25 Dec 2020	161 mm2018 · driest 6 mm in 1955	87

Typical days per month at LEWISTOWN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	2	4
February	0	0	25	2	3
March	<1	<1	21	3	2
April	4	<1	6	3	<1
May	11	4	<1	4	0
June	22	8	0	3	0
July	29	15	0	3	0
August	27	12	0	3	0
September	15	4	<1	3	0
October	4	<1	3	3	0
November	<1	0	15	3	<1
December	0	0	24	3	2

How often, not how much — every day in LEWISTOWN’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%	26%	7%	27%	0.0–6.1°C
February	1%	25%	7%	25%	1.7–7.5°C
March	7%	29%	9%	35%	6.8–13.1°C
April	25%	33%	10%	42%	14.9–19.7°C
May	50%	35%	12%	47%	20.3–25.6°C
June	66%	32%	11%	39%	25.5–28.8°C
July	71%	29%	11%	32%	27.9–31.5°C
August	73%	27%	10%	27%	26.9–30.5°C
September	66%	26%	10%	30%	22.9–27.1°C
October	34%	25%	9%	25%	16.3–21.3°C
November	7%	26%	9%	28%	8.9–14.1°C
December	<1%	25%	8%	28%	2.2–8.0°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.

1939Each stripe is one year’s mean temperature against the 73-year average. Warmest: 2024. Coolest: 1958.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5179809
NOAA station: USC00364992 · LEWISTOWN
Station distance: 13.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 40.61°, 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 LEWISTOWN is what differs

Lewistown→Burnham→Church Hill→Milroy→Highland Park→Yeagertown→

Or put two places side by side: Belleville vs Lewistown

Best time to visitBelleville.