United States · 1991–2020

Best time to visit
McGill.

September leads for comfortable weather in McGill: typically 25.3°C by day, 6.2°C at night, with 20 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.3°C

Typical low6.2°C

Rain in September20 mm

Comfort

September

September · June · August

80climate match

Beach

July

July · August · June

70climate match

Outdoors

May

May · September · June

86climate match

The weakest month is January, scoring 5 against September’s 80 — days reach only 4.9°C, 19° below the 24°C the score treats as ideal, and nights drop to -9°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

54.9° / -9°

Feb

56.5° / -7.3°

Mar

2311.3° / -3.8°

Apr

3914.7° / -0.9°

May

6419.9° / 3.2°

Jun

7926.6° / 7.9°

Jul

7231.1° / 12.4°

Aug

7430.1° / 11.6°

Sep

8025.3° / 6.2°

Oct

5318° / 0.1°

Nov

2010.6° / -5°

Dec

54.9° / -9.1°

Monthly climate evidence for McGill — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	4.9°C	-9°C	18 mm	3.5	9 h 40	5	Strong coverage
February	6.5°C	-7.3°C	20 mm	4	10 h 39	5	Strong coverage
March	11.3°C	-3.8°C	22 mm	4.2	11 h 49	23	Strong coverage
April	14.7°C	-0.9°C	27 mm	4.5	13 h 11	39	Strong coverage
May	19.9°C	3.2°C	25 mm	4.6	14 h 19	64	Strong coverage
June	26.6°C	7.9°C	15 mm	2.4	14 h 56	79	Strong coverage
July	31.1°C	12.4°C	13 mm	2.7	14 h 41	72	Strong coverage
August	30.1°C	11.6°C	14 mm	2.9	13 h 43	74	Strong coverage
September	25.3°C	6.2°C	20 mm	2.9	12 h 24	80	Strong coverage
October	18°C	0.1°C	19 mm	3.5	11 h 06	53	Strong coverage
November	10.6°C	-5°C	15 mm	2.9	9 h 57	20	Strong coverage
December	4.9°C	-9.1°C	16 mm	3.2	9 h 24	5	Strong coverage

What has changed

McGill runs +1.9°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

+0.5

Feb

+0.6

Mar

+2.4

Apr

+2.5

May

+0.8

Jun

+3.2

Jul

+1.9

Aug

+2.1

Sep

+2.8

Oct

+1.6

Nov

+2.3

Dec

+1.6

September daytime highs, 2011–2025. Last recorded: 26.6°C.

Records at MCGILL, 1892–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.9°C2 Jan 1918	-31.7°C20 Jan 1937	48 mm27 Jan 1916	117 mm1916 · driest 0 mm in 1919	116
February	21.1°C9 Feb 1926	-30.0°C9 Feb 1933	45 mm26 Feb 1930	61 mm1936 · driest 0 mm in 1972	115
March	28.9°C21 Mar 2026	-27.8°C6 Mar 1894	51 mm10 Mar 2019	105 mm2019 · driest 0 mm in 1997	117
April	31.7°C14 Apr 1925	-14.4°C7 Apr 1929	51 mm18 Apr 1988	81 mm1978 · driest 0 mm in 1985	117
May	35.6°C18 May 1925	-9.4°C7 May 1965	51 mm11 May 1956	85 mm1956 · driest 0 mm in 1970	115
June	37.8°C12 Jun 1897	-6.7°C12 Jun 1894	46 mm12 Jun 2016	109 mm1967 · driest 0 mm in 2025	116
July	40.0°C27 Jul 1898	-4.4°C15 Jul 1893	27 mm6 Jul 1937	77 mm1937 · driest 0 mm in 1978	117
August	37.8°C5 Aug 1938	-2.8°C29 Aug 1892	32 mm4 Aug 1929	83 mm1983 · driest 0 mm in 1944	117
September	36.1°C4 Sep 2022	-6.7°C27 Sep 1959	65 mm27 Sep 1982	142 mm1982 · driest 0 mm in 2018	115
October	33.3°C17 Oct 1927	-15.6°C30 Oct 1971	31 mm1 Oct 1976	86 mm1981 · driest 0 mm in 1915	114
November	25.6°C4 Nov 1927	-27.2°C25 Nov 2010	32 mm7 Nov 1960	48 mm1944 · driest 0 mm in 1914	116
December	20.0°C13 Dec 1921	-31.1°C12 Dec 1932	39 mm1 Dec 1967	77 mm2010 · driest 0 mm in 2019	117

Typical days per month at MCGILL, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	29	<1	2
February	0	0	25	<1	3
March	<1	0	25	<1	3
April	<1	0	18	<1	1
May	7	<1	8	<1	<1
June	21	9	<1	<1	0
July	30	22	0	<1	0
August	29	19	<1	<1	0
September	19	3	2	<1	<1
October	3	<1	16	<1	<1
November	0	0	24	<1	1
December	0	0	28	<1	3

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 84); on 2011–2025 it is September (77). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in MCGILL’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%	11%	1%	6%	0.8–7.5°C
February	<1%	12%	1%	7%	2.6–9.0°C
March	3%	14%	2%	10%	6.2–13.4°C
April	21%	15%	2%	12%	11.4–17.8°C
May	53%	15%	2%	12%	16.4–23.1°C
June	82%	10%	2%	7%	22.6–29.3°C
July	89%	11%	1%	9%	28.7–32.8°C
August	87%	12%	2%	9%	27.6–31.4°C
September	81%	9%	2%	6%	22.0–27.2°C
October	41%	10%	2%	7%	14.2–21.3°C
November	4%	10%	<1%	4%	6.5–13.7°C
December	0%	10%	1%	6%	2.1–8.4°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 104-year average. Warmest: 1934. Coolest: 1975.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5508030
NOAA station: USC00264950 · MCGILL
Station distance: 1.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 39.40°, 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 MCGILL is what differs

Adverse→Aurum (historical)→Bassett (historical)→Cleveland (historical)→Glenn→Hunter (historical)→

Or put two places side by side: McGill vs Adverse

Best time to visitMcGill.

September

July

May

The whole year,without the guesswork.

McGill runs +1.9°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
McGill.

The whole year,
without the guesswork.

McGill runs +1.9°C
on the 1961–1990 baseline.

Nearby, measured,
and named.