United States · 1991–2020

Best time to visit
Belmont.

September leads for comfortable weather in Belmont: typically 25.7°C by day, 14.1°C at night, with 80 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.7°C

Typical low14.1°C

Rain in September80 mm

Comfort

September

September · May · August

84climate match

Beach

August

August · July · June

80climate match

Outdoors

October

October · April · September

79climate match

The weakest month is January, scoring 5 against September’s 84 — days reach only 2.3°C, 22° 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

52.3° / -6.2°

Feb

55° / -4.3°

Mar

1811.1° / 0.6°

Apr

4717.8° / 6.2°

May

7323.1° / 12.1°

Jun

6527.9° / 17.2°

Jul

5829.7° / 19.1°

Aug

6729.1° / 18.4°

Sep

8425.7° / 14.1°

Oct

5918.7° / 7.5°

Nov

2211.1° / 1.6°

Dec

54.8° / -3.2°

Monthly climate evidence for Belmont — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.3°C	-6.2°C	79 mm	8.6	9 h 38	5	Strong coverage
February	5°C	-4.3°C	62 mm	7.7	10 h 38	5	Strong coverage
March	11.1°C	0.6°C	94 mm	9.1	11 h 49	18	Strong coverage
April	17.8°C	6.2°C	110 mm	9.9	13 h 12	47	Strong coverage
May	23.1°C	12.1°C	121 mm	10.8	14 h 21	73	Strong coverage
June	27.9°C	17.2°C	126 mm	9.6	14 h 58	65	Strong coverage
July	29.7°C	19.1°C	112 mm	8.4	14 h 43	58	Strong coverage
August	29.1°C	18.4°C	81 mm	6.7	13 h 44	67	Strong coverage
September	25.7°C	14.1°C	80 mm	6.2	12 h 24	84	Strong coverage
October	18.7°C	7.5°C	82 mm	7.4	11 h 05	59	Strong coverage
November	11.1°C	1.6°C	88 mm	7.8	9 h 56	22	Strong coverage
December	4.8°C	-3.2°C	74 mm	8.5	9 h 22	5	Strong coverage

What has changed

Belmont runs +1.0°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

+1.4

Feb

+2.2

Mar

+1.6

Apr

+0.6

May

+0.5

Jun

+0.4

Jul

+0.4

Aug

+0.6

Sep

+1.0

Oct

+0.6

Nov

+0.2

Dec

+2.4

September daytime highs, 2011–2025. Last recorded: 27.7°C.

Records at INDIANAPOLIS, 1948–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.7°C25 Jan 1950	-32.8°C19 Jan 1994	72 mm3 Jan 1950	323 mm1950 · driest 9 mm in 1981	79
February	25.0°C20 Feb 2018	-29.4°C10 Feb 1982	63 mm26 Feb 1977	136 mm1971 · driest 10 mm in 1978	79
March	31.1°C22 Mar 2026	-21.7°C2 Mar 1980	76 mm4 Mar 1963	273 mm1963 · driest 16 mm in 2001	79
April	31.7°C30 Apr 1970	-7.8°C8 Apr 1972	99 mm3 Apr 2018	218 mm2013 · driest 25 mm in 1976	79
May	35.0°C28 May 2018	-2.7°C9 May 2020	97 mm30 May 2004	235 mm1968 · driest 27 mm in 1988	79
June	40.0°C28 Jun 2012	2.8°C22 Jun 1992	98 mm15 Jun 2019	261 mm1998 · driest 2 mm in 2012	79
July	40.6°C7 Jul 2012	8.9°C14 Jul 1975	129 mm1 Jul 1987	334 mm2015 · driest 12 mm in 2011	79
August	38.9°C16 Aug 1988	5.0°C29 Aug 1965	113 mm6 Aug 1976	212 mm1980 · driest 9 mm in 2010	78
September	37.8°C5 Sep 1954	0.0°C30 Sep 1993	183 mm1 Sep 2003	264 mm2003 · driest 3 mm in 2020	78
October	33.3°C2 Oct 2019	-6.7°C24 Oct 1981	99 mm10 Oct 1959	199 mm1986 · driest 4 mm in 1963	78
November	27.2°C1 Nov 1950	-18.9°C30 Nov 1958	105 mm14 Nov 1993	216 mm1985 · driest 18 mm in 1999	78
December	23.3°C2 Dec 1982	-30.6°C22 Dec 1989	65 mm21 Dec 2013	196 mm1990 · driest 12 mm in 1976	78

Typical days per month at INDIANAPOLIS, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	3	7
February	0	0	23	2	6
March	1	0	16	4	2
April	4	0	4	3	<1
May	13	2	<1	4	0
June	24	11	0	4	0
July	29	16	0	3	0
August	29	14	0	3	0
September	18	6	0	2	0
October	5	<1	2	3	<1
November	<1	0	13	3	1
December	0	0	23	2	6

How often, not how much — every day in INDIANAPOLIS’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%	27%	8%	31%	-1.3–5.5°C
February	<1%	26%	7%	28%	0.4–8.2°C
March	9%	31%	11%	38%	7.4–14.5°C
April	26%	32%	11%	42%	15.1–19.7°C
May	51%	33%	12%	41%	20.8–25.7°C
June	70%	29%	12%	34%	26.1–29.5°C
July	73%	27%	11%	27%	28.0–31.8°C
August	78%	22%	9%	20%	27.4–30.5°C
September	72%	20%	8%	17%	23.4–27.9°C
October	37%	22%	8%	22%	16.5–21.3°C
November	8%	26%	9%	29%	7.6–13.8°C
December	<1%	29%	9%	35%	0.7–7.7°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.

1948Each stripe is one year’s mean temperature against the 78-year average. Warmest: 2024. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4254364
NOAA station: USW00093819 · INDIANAPOLIS
Station distance: 8.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 39.75°, 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 INDIANAPOLIS is what differs

Plainfield→Mooresville→Clayton→Allman→Belleville→Ben Davis→

Or put two places side by side: Belmont vs Plainfield

Best time to visitBelmont.

September

August

October

The whole year,without the guesswork.

Belmont runs +1.0°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Belmont.

The whole year,
without the guesswork.

Belmont runs +1.0°C
on the 1961–1990 baseline.

Nearby, measured,
and named.