United States · 1991–2020

Best time to visit
Montello.

August leads for comfortable weather in Montello: typically 26.6°C by day, 14.5°C at night, with 105 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high26.6°C

Typical low14.5°C

Rain in August105 mm

Comfort

August

August · June · September

76climate match

Beach

July

July · August · June

62climate match

Outdoors

September

September · May · October

76climate match

The weakest month is January, scoring 5 against August’s 76 — days reach only -3.1°C, 27° 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

5-3.1° / -13.3°

Feb

5-0.4° / -11.6°

Mar

56° / -5.4°

Apr

2613.5° / 1.1°

May

5820.5° / 7.9°

Jun

7325.5° / 13.3°

Jul

7227.6° / 15.6°

Aug

7626.6° / 14.5°

Sep

7322.6° / 9.7°

Oct

4015.3° / 3.1°

Nov

57° / -3.1°

Dec

5-0.1° / -9.4°

Monthly climate evidence for Montello — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-3.1°C	-13.3°C	35 mm	6.2	9 h 15	5	Strong coverage
February	-0.4°C	-11.6°C	33 mm	6	10 h 24	5	Strong coverage
March	6°C	-5.4°C	48 mm	7.1	11 h 47	5	Strong coverage
April	13.5°C	1.1°C	94 mm	9.2	13 h 22	26	Strong coverage
May	20.5°C	7.9°C	113 mm	10.8	14 h 42	58	Strong coverage
June	25.5°C	13.3°C	126 mm	10	15 h 26	73	Strong coverage
July	27.6°C	15.6°C	111 mm	8.3	15 h 09	72	Strong coverage
August	26.6°C	14.5°C	105 mm	8.3	13 h 59	76	Strong coverage
September	22.6°C	9.7°C	90 mm	8.3	12 h 27	73	Strong coverage
October	15.3°C	3.1°C	72 mm	8.3	10 h 56	40	Strong coverage
November	7°C	-3.1°C	53 mm	6.5	9 h 35	5	Strong coverage
December	-0.1°C	-9.4°C	42 mm	6.7	8 h 56	5	Strong coverage

What has changed

Montello runs +0.5°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

+1.0

Mar

+1.7

Apr

-1.1

May

-0.4

Jun

-0.5

Jul

-0.5

Aug

-0.2

Sep

+1.1

Oct

+0.1

Nov

+0.8

Dec

+2.5

August daytime highs, 2011–2025. Last recorded: 25.9°C.

Records at MONTELLO WWTP, 1954–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	13.3°C31 Jan 2025	-37.2°C15 Jan 1963	33 mm9 Jan 2026	68 mm2017 · driest 1 mm in 2025	70
February	22.2°C28 Feb 2024	-36.1°C3 Feb 1996	25 mm14 Feb 1998	76 mm2023 · driest 0 mm in 1969	70
March	28.9°C30 Mar 1986	-34.4°C1 Mar 1962	70 mm31 Mar 1998	140 mm2016 · driest 6 mm in 1978	70
April	33.3°C22 Apr 1980	-12.2°C5 Apr 2018	60 mm24 Apr 1955	201 mm2026 · driest 21 mm in 1989	70
May	35.0°C13 May 2022	-5.6°C9 May 1966	83 mm18 May 2020	301 mm2004 · driest 23 mm in 1988	70
June	38.9°C21 Jun 1988	-0.6°C10 Jun 1972	87 mm17 Jun 1984	275 mm2008 · driest 17 mm in 2012	70
July	40.0°C6 Jul 2012	4.4°C6 Jul 1965	102 mm25 Jul 1985	273 mm1999 · driest 12 mm in 1967	71
August	39.4°C2 Aug 1988	1.7°C25 Aug 1958	150 mm28 Aug 2018	377 mm2018 · driest 20 mm in 2011	70
September	36.7°C4 Sep 2023	-3.9°C28 Sep 1991	125 mm22 Sep 1986	375 mm1986 · driest 15 mm in 1975	68
October	31.1°C4 Oct 2025	-11.7°C22 Oct 1982	126 mm23 Oct 2020	167 mm2020 · driest 2 mm in 1964	70
November	24.4°C10 Nov 1999	-24.4°C29 Nov 1976	54 mm21 Nov 1992	138 mm1985 · driest 2 mm in 1976	69
December	18.3°C4 Dec 1998	-36.7°C19 Dec 1983	50 mm14 Dec 2015	122 mm2015 · driest 4 mm in 1958	69

Typical days per month at MONTELLO WWTP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	6
February	0	0	27	1	5
March	<1	0	25	1	3
April	2	<1	14	3	1
May	8	2	1	4	0
June	18	5	0	4	0
July	25	8	0	4	0
August	22	5	0	3	0
September	11	2	<1	3	0
October	2	<1	9	2	<1
November	0	0	22	2	1
December	0	0	29	1	5

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 80); on 2011–2025 it is September (82). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in MONTELLO WWTP’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%	18%	2%	15%	-6.9–-0.2°C
February	<1%	18%	3%	15%	-4.5–3.3°C
March	3%	22%	6%	24%	2.2–9.6°C
April	14%	30%	10%	37%	10.6–16.6°C
May	42%	31%	11%	37%	18.2–23.8°C
June	66%	30%	12%	35%	24.1–28.2°C
July	74%	25%	11%	25%	26.2–30.2°C
August	73%	26%	10%	26%	25.0–28.4°C
September	55%	26%	10%	30%	20.6–24.8°C
October	20%	24%	7%	25%	12.6–18.2°C
November	2%	22%	6%	19%	3.3–9.9°C
December	0%	20%	4%	17%	-4.2–2.5°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.

1955Each stripe is one year’s mean temperature against the 63-year average. Warmest: 2024. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5263366
NOAA station: USC00475581 · MONTELLO WWTP
Station distance: 1.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 43.79°, 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 MONTELLO WWTP is what differs

Westfield→Princeton→Oxford→Endeavor→Neshkoro→Packwaukee→

Or put two places side by side: Montello vs Westfield

Best time to visitMontello.