Canada · 1991–2020

Best time to visit
Portneuf.

August leads for comfortable weather in Portneuf: typically 24.5°C by day, 13.3°C at night, with 104 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high24.5°C

Typical low13.3°C

Rain in August104 mm

Comfort

August

August · June · July

78climate match

Beach

July

July · August · June

45climate match

Outdoors

September

September · May · June

74climate match

The weakest month is January, scoring 5 against August’s 78 — days reach only -7°C, 31° 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

5-7° / -16.6°

Feb

5-4.6° / -16°

Mar

51.1° / -8.8°

Apr

88.9° / -0.7°

May

4818° / 6.2°

Jun

7123.2° / 11.3°

Jul

7125.7° / 14.3°

Aug

7824.5° / 13.3°

Sep

5619.6° / 8.7°

Oct

1811.8° / 3.1°

Nov

54.1° / -2.9°

Dec

5-2.6° / -10°

Monthly climate evidence for Portneuf — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-7°C	-16.6°C	75 mm	12.1	8 h 56	5	Good coverage
February	-4.6°C	-16°C	63 mm	10.1	10 h 13	5	Good coverage
March	1.1°C	-8.8°C	64 mm	9.3	11 h 45	5	Strong coverage
April	8.9°C	-0.7°C	85 mm	10.7	13 h 30	8	Strong coverage
May	18°C	6.2°C	96 mm	11.9	15 h	48	Strong coverage
June	23.2°C	11.3°C	114 mm	12.3	15 h 49	71	Good coverage
July	25.7°C	14.3°C	125 mm	13.1	15 h 30	71	Strong coverage
August	24.5°C	13.3°C	104 mm	11.1	14 h 12	78	Good coverage
September	19.6°C	8.7°C	108 mm	11.2	12 h 29	56	Good coverage
October	11.8°C	3.1°C	118 mm	12.8	10 h 48	18	Good coverage
November	4.1°C	-2.9°C	77 mm	11.1	9 h 19	5	Good coverage
December	-2.6°C	-10°C	84 mm	12.2	8 h 34	5	Strong coverage

Records at DESCHAMBAULT, 1971–2023
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	10.7°C12 Jan 2018	-38.5°C4 Jan 1981	54 mm18 Jan 2006	167 mm1997 · driest 0 mm in 2018	43
February	9.0°C27 Feb 2000	-35.0°C7 Feb 1993	51 mm20 Feb 1996	152 mm1981 · driest 3 mm in 1978	41
March	19.0°C21 Mar 2012	-31.5°C1 Mar 1982	50 mm14 Mar 2017	137 mm2008 · driest 0 mm in 2021	44
April	30.5°C27 Apr 1990	-17.0°C6 Apr 1982	39 mm9 Apr 1980	167 mm1996 · driest 5 mm in 2022	46
May	35.0°C27 May 2020	-4.4°C13 May 2020	65 mm7 May 1986	233 mm1983 · driest 4 mm in 2017	49
June	35.5°C23 Jun 2020	-1.0°C6 Jun 1990	61 mm27 Jun 1986	222 mm1994 · driest 0 mm in 2017	49
July	34.3°C10 Jul 2020	3.0°C4 Jul 1982	68 mm22 Jul 1980	224 mm1980 · driest 0 mm in 2022	50
August	34.4°C1 Aug 1975	1.1°C31 Aug 1976	80 mm23 Aug 1986	181 mm1973 · driest 0 mm in 2021	48
September	33.0°C9 Sep 2002	-5.5°C29 Sep 1980	91 mm26 Sep 2005	225 mm2005 · driest 4 mm in 2020	47
October	26.0°C2 Oct 2002	-8.4°C31 Oct 2020	82 mm15 Oct 2005	220 mm2006 · driest 29 mm in 2019	45
November	21.0°C11 Nov 2002	-24.0°C24 Nov 1989	41 mm24 Nov 2004	172 mm1983 · driest 0 mm in 2019	41
December	13.5°C24 Dec 2015	-35.0°C25 Dec 1980	42 mm1 Dec 1996	179 mm2003 · driest 16 mm in 2015	41

Typical days per month at DESCHAMBAULT, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	2	12
February	0	0	27	2	10
March	0	0	28	2	7
April	<1	0	16	3	2
May	3	<1	3	3	<1
June	10	2	<1	3	0
July	18	4	0	4	0
August	14	2	0	3	0
September	3	<1	1	3	0
October	<1	0	8	4	<1
November	0	0	21	3	5
December	0	0	27	3	10

How often, not how much — every day in DESCHAMBAULT’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%	7%	55%	-10.9–-3.4°C
February	0%	33%	6%	48%	-7.8–-1.7°C
March	0%	29%	7%	42%	-1.2–3.5°C
April	3%	34%	11%	46%	7.1–11.4°C
May	24%	38%	12%	55%	15.2–20.6°C
June	49%	41%	13%	61%	20.6–24.4°C
July	58%	40%	14%	58%	23.9–27.4°C
August	57%	38%	12%	50%	22.4–25.6°C
September	29%	37%	11%	57%	17.2–21.0°C
October	4%	39%	12%	56%	9.4–13.8°C
November	<1%	38%	9%	59%	1.9–6.2°C
December	0%	40%	9%	62%	-5.5–-0.4°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.

1978Each stripe is one year’s mean temperature against the 30-year average. Warmest: 2021. Coolest: 1989.2021

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 6354894
NOAA station: CA007011982 · DESCHAMBAULT
Station distance: 3.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 23 usable years
Daylight: Calculated from latitude 46.69°, 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 DESCHAMBAULT is what differs

Lotbinière→Grondines-Est→Le Frappe-Sacre→Deschambault→

Or put two places side by side: Portneuf vs Lotbinière

Best time to visitPortneuf.