Canada · 1991–2020

Best time to visit
Granby.

August leads for comfortable weather in Granby: typically 24.6°C by day, 14.7°C at night, with 116 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high24.6°C

Typical low14.7°C

Rain in August116 mm

Comfort

August

August · June · July

79climate match

Beach

July

July · August · June

52climate match

Outdoors

September

September · May · June

76climate match

The weakest month is January, scoring 5 against August’s 79 — days reach only -4.7°C, 29° 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

5-4.7° / -13.6°

Feb

5-3.4° / -12.1°

Mar

52.4° / -6.3°

Apr

1410.5° / 0.9°

May

5318.7° / 8°

Jun

7523.4° / 13.1°

Jul

7425.7° / 15.7°

Aug

7924.6° / 14.7°

Sep

6120.3° / 10.5°

Oct

2512.8° / 4.4°

Nov

55.6° / -1.6°

Dec

5-1° / -8.3°

Monthly climate evidence for Granby — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-4.7°C	-13.6°C	95 mm	15	9 h 05	5	Strong coverage
February	-3.4°C	-12.1°C	74 mm	12.1	10 h 18	5	Strong coverage
March	2.4°C	-6.3°C	85 mm	11.8	11 h 46	5	Strong coverage
April	10.5°C	0.9°C	97 mm	11.4	13 h 26	14	Strong coverage
May	18.7°C	8°C	103 mm	11.5	14 h 52	53	Strong coverage
June	23.4°C	13.1°C	114 mm	11.8	15 h 39	75	Strong coverage
July	25.7°C	15.7°C	117 mm	11.4	15 h 20	74	Strong coverage
August	24.6°C	14.7°C	116 mm	10.5	14 h 06	79	Strong coverage
September	20.3°C	10.5°C	116 mm	10.6	12 h 28	61	Strong coverage
October	12.8°C	4.4°C	112 mm	11.4	10 h 52	25	Strong coverage
November	5.6°C	-1.6°C	90 mm	12.7	9 h 26	5	Strong coverage
December	-1°C	-8.3°C	101 mm	15	8 h 44	5	Strong coverage

What has changed

Granby runs +1.6°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

+1.7

Feb

+1.3

Mar

+1.0

Apr

+0.5

May

+1.9

Jun

+1.4

Jul

+1.4

Aug

+1.8

Sep

+2.2

Oct

+2.0

Nov

+0.7

Dec

+3.3

August daytime highs, 2011–2022. Last recorded: 25.2°C.

Records at GRANBY, 1948–2023
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.5°C15 Jan 1995	-37.0°C13 Jan 1981	53 mm11 Jan 2020	195 mm1978 · driest 23 mm in 2023	67
February	17.1°C21 Feb 2018	-35.0°C18 Feb 1979	44 mm19 Feb 1972	154 mm1976 · driest 24 mm in 1950	64
March	25.0°C21 Mar 2012	-31.1°C5 Mar 1950	48 mm14 Mar 2017	183 mm1976 · driest 14 mm in 1967	67
April	30.0°C27 Apr 2009	-17.2°C4 Apr 1954	47 mm27 Apr 2011	176 mm1996 · driest 8 mm in 2004	68
May	34.5°C27 May 2020	-5.0°C10 May 1966	54 mm19 May 2006	208 mm2006 · driest 10 mm in 2021	66
June	34.4°C13 Jun 1949	-1.0°C3 Jun 1986	64 mm19 Jun 1978	219 mm1978 · driest 16 mm in 1965	66
July	36.1°C28 Jul 1949	1.7°C29 Jul 1952	81 mm7 Jul 1976	230 mm1976 · driest 33 mm in 2019	67
August	35.6°C27 Aug 1948	2.0°C29 Aug 1986	117 mm7 Aug 1972	236 mm1984 · driest 41 mm in 1954	65
September	33.0°C4 Sep 1999	-3.0°C27 Sep 1984	70 mm29 Sep 2020	221 mm1999 · driest 13 mm in 1948	65
October	28.9°C12 Oct 1949	-8.9°C30 Oct 1965	69 mm31 Oct 2019	202 mm2019 · driest 13 mm in 1963	65
November	23.9°C2 Nov 1950	-20.0°C22 Nov 2018	61 mm8 Nov 1996	204 mm1983 · driest 39 mm in 1953	65
December	19.0°C24 Dec 2015	-33.0°C25 Dec 1980	73 mm1 Dec 2006	205 mm1983 · driest 38 mm in 1963	65

Typical days per month at GRANBY, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	29	3	15
February	0	0	26	2	13
March	0	0	25	3	9
April	<1	0	14	4	3
May	4	<1	1	3	<1
June	11	2	0	4	0
July	19	3	0	4	0
August	16	2	0	4	0
September	5	<1	<1	4	0
October	<1	0	6	4	<1
November	0	0	19	3	6
December	0	0	28	3	13

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 84); on 2011–2025 it is June (86). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in GRANBY’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%	44%	9%	65%	-9.0–-1.5°C
February	0%	40%	9%	55%	-7.1–-0.3°C
March	<1%	36%	9%	51%	-0.4–5.5°C
April	6%	36%	11%	47%	8.5–13.1°C
May	28%	36%	10%	49%	15.8–20.8°C
June	51%	37%	13%	48%	21.4–24.8°C
July	62%	36%	12%	48%	23.8–27.4°C
August	59%	34%	13%	45%	22.2–26.3°C
September	31%	34%	12%	46%	17.4–21.9°C
October	9%	36%	11%	49%	10.0–15.3°C
November	<1%	42%	10%	62%	2.6–8.3°C
December	0%	46%	11%	72%	-5.1–1.7°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.

1949Each stripe is one year’s mean temperature against the 54-year average. Warmest: 2012. Coolest: 1992.2021

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5964215
NOAA station: CA007022800 · GRANBY
Station distance: 2.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 45.40°, 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 GRANBY is what differs

Waterloo→Roxton Pond→Bromont→Darby→Domaine-Richard→Granby-Ouest→

Or put two places side by side: Granby vs Waterloo

Best time to visitGranby.