Canada · 1991–2020

Best time to visit
Black Bay.

August leads for comfortable weather in Black Bay: typically 25.6°C by day, 13.5°C at night, with 91 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high25.6°C

Typical low13.5°C

Rain in August91 mm

Comfort

August

August · June · July

78climate match

Beach

July

July · August · June

59climate match

Outdoors

September

September · May · June

80climate match

The weakest month is January, scoring 5 against August’s 78 — days reach only -6.3°C, 30° 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

5-6.3° / -15.9°

Feb

5-3.7° / -14.6°

Mar

52.8° / -8.2°

Apr

1611° / -0.7°

May

5619.6° / 6.3°

Jun

7724.6° / 11.9°

Jul

7527.1° / 14.6°

Aug

7825.6° / 13.5°

Sep

6520.6° / 9.3°

Oct

2612.3° / 3.3°

Nov

54.5° / -3.2°

Dec

5-2.8° / -10.5°

Monthly climate evidence for Black Bay — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-6.3°C	-15.9°C	67 mm	12.2	9 h 02	5	Strong coverage
February	-3.7°C	-14.6°C	51 mm	9.9	10 h 17	5	Strong coverage
March	2.8°C	-8.2°C	60 mm	9.6	11 h 45	5	Strong coverage
April	11°C	-0.7°C	78 mm	10.3	13 h 28	16	Strong coverage
May	19.6°C	6.3°C	81 mm	11	14 h 54	56	Strong coverage
June	24.6°C	11.9°C	96 mm	11.1	15 h 43	77	Strong coverage
July	27.1°C	14.6°C	89 mm	10	15 h 24	75	Strong coverage
August	25.6°C	13.5°C	91 mm	10.3	14 h 08	78	Strong coverage
September	20.6°C	9.3°C	83 mm	10.5	12 h 29	65	Strong coverage
October	12.3°C	3.3°C	82 mm	11.6	10 h 50	26	Strong coverage
November	4.5°C	-3.2°C	77 mm	11.8	9 h 24	5	Strong coverage
December	-2.8°C	-10.5°C	72 mm	13.1	8 h 41	5	Strong coverage

Records at PETAWAWA HOFFMAN, 1993–2024
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	10.0°C18 Jan 1996	-37.0°C19 Jan 1994	47 mm11 Jan 2020	122 mm2006 · driest 29 mm in 2021	31
February	14.5°C19 Feb 1994	-35.5°C4 Feb 2023	38 mm26 Feb 2020	99 mm2016 · driest 13 mm in 2007	31
March	28.0°C21 Mar 2012	-31.0°C7 Mar 2007	36 mm24 Mar 2016	138 mm2016 · driest 22 mm in 2010	31
April	32.0°C16 Apr 2002	-16.5°C7 Apr 2003	46 mm30 Apr 2023	166 mm2017 · driest 22 mm in 1999	31
May	36.5°C27 May 2020	-4.5°C12 May 2020	56 mm24 May 1999	166 mm2017 · driest 24 mm in 2012	30
June	36.0°C18 Jun 1994	0.5°C1 Jun 2020	66 mm26 Jun 2023	187 mm2017 · driest 20 mm in 1997	31
July	37.5°C5 Jul 2018	6.0°C20 Jul 2000	97 mm19 Jul 2007	187 mm2007 · driest 35 mm in 2012	31
August	36.5°C9 Aug 2001	4.0°C22 Aug 1993	56 mm2 Aug 2020	181 mm2020 · driest 19 mm in 2021	31
September	36.0°C9 Sep 2002	-3.0°C29 Sep 2000	62 mm26 Sep 1998	159 mm2006 · driest 28 mm in 2023	31
October	30.0°C4 Oct 2023	-8.5°C23 Oct 1997	44 mm14 Oct 2003	144 mm2019 · driest 21 mm in 2000	31
November	23.0°C9 Nov 2020	-24.0°C29 Nov 1995	50 mm15 Nov 2008	135 mm1995 · driest 22 mm in 2012	31
December	15.0°C24 Dec 2015	-34.5°C27 Dec 1993	35 mm2 Dec 2007	120 mm2012 · driest 22 mm in 1997	31

Typical days per month at PETAWAWA HOFFMAN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	2	15
February	0	0	28	1	12
March	0	0	27	2	7
April	<1	<1	18	3	3
May	6	2	4	3	<1
June	15	5	0	4	0
July	22	8	0	3	0
August	18	5	0	3	0
September	7	<1	<1	3	0
October	<1	0	9	2	<1
November	0	0	22	2	7
December	0	0	29	2	13

How often, not how much — every day in PETAWAWA HOFFMAN’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%	38%	6%	53%	-9.6–-2.4°C
February	0%	36%	4%	46%	-6.6–-0.9°C
March	<1%	31%	5%	40%	0.6–6.3°C
April	8%	35%	9%	51%	8.6–14.4°C
May	36%	35%	9%	48%	17.5–22.7°C
June	56%	37%	12%	50%	23.0–26.8°C
July	67%	33%	9%	41%	25.1–29.3°C
August	65%	33%	10%	42%	24.0–27.5°C
September	38%	35%	10%	45%	18.5–23.1°C
October	8%	38%	8%	55%	10.4–14.7°C
November	1%	38%	7%	56%	1.6–7.8°C
December	0%	42%	6%	59%	-6.3–0.3°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.

1994Each stripe is one year’s mean temperature against the 30-year average. Warmest: 2021. Coolest: 1997.2023

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5902162
NOAA station: CA00610FC98 · PETAWAWA HOFFMAN
Station distance: 8.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 45.87°, 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 PETAWAWA HOFFMAN is what differs

Petawawa→Pembroke→Eganville→Alice→Allans Corners→Brumsfield→

Or put two places side by side: Black Bay vs Petawawa

Best time to visitBlack Bay.