Canada · 1991–2020

Best time to visit
Saint-Jean-sur-Richelieu.

June leads for comfortable weather in Saint-Jean-sur-Richelieu: typically 24.3°C by day, 13.3°C at night, with 98 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high24.3°C

Typical low13.3°C

Rain in June98 mm

Comfort

June

June · August · July

80climate match

Beach

August

August · July · June

53climate match

Outdoors

September

September · May · June

77climate match

The weakest month is January, scoring 5 against June’s 80 — days reach only -4.8°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

5-4.8° / -13.9°

Feb

5-3.1° / -12.8°

Mar

52.7° / -6.5°

Apr

1911.3° / 1.2°

May

5419.2° / 7.7°

Jun

8024.3° / 13.3°

Jul

7126.2° / 15.6°

Aug

7925.4° / 14.7°

Sep

6721° / 10.3°

Oct

2913.3° / 4.5°

Nov

56.3° / -1.1°

Dec

5-1° / -8.6°

Monthly climate evidence for Saint-Jean-sur-Richelieu — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-4.8°C	-13.9°C	73 mm	10.8	9 h 05	5	Good coverage
February	-3.1°C	-12.8°C	62 mm	9.1	10 h 19	5	Good coverage
March	2.7°C	-6.5°C	67 mm	9	11 h 46	5	Good coverage
April	11.3°C	1.2°C	93 mm	9.7	13 h 26	19	Good coverage
May	19.2°C	7.7°C	105 mm	11.4	14 h 51	54	Good coverage
June	24.3°C	13.3°C	98 mm	11.2	15 h 38	80	Good coverage
July	26.2°C	15.6°C	122 mm	12.2	15 h 19	71	Good coverage
August	25.4°C	14.7°C	103 mm	9.5	14 h 06	79	Good coverage
September	21°C	10.3°C	95 mm	10.4	12 h 28	67	Good coverage
October	13.3°C	4.5°C	107 mm	10.8	10 h 52	29	Good coverage
November	6.3°C	-1.1°C	80 mm	10.6	9 h 27	5	Good coverage
December	-1°C	-8.6°C	78 mm	11.7	8 h 45	5	Good coverage

Records at IBERVILLE, 1963–2016
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.5°C15 Jan 1995	-39.0°C27 Jan 1994	38 mm23 Jan 1966	152 mm1978 · driest 13 mm in 1980	51
February	15.5°C22 Feb 1981	-40.0°C7 Feb 1993	34 mm4 Feb 1995	138 mm1971 · driest 11 mm in 1978	52
March	23.3°C30 Mar 1977	-33.0°C2 Mar 1992	43 mm13 Mar 1993	128 mm1976 · driest 4 mm in 2015	54
April	30.0°C27 Apr 2009	-14.5°C5 Apr 1995	53 mm15 Apr 2007	167 mm1996 · driest 9 mm in 2004	53
May	34.0°C26 May 2010	-4.4°C7 May 1966	53 mm31 May 1972	226 mm2006 · driest 17 mm in 2016	52
June	34.5°C15 Jun 1988	0.5°C8 Jun 1990	51 mm16 Jun 1976	157 mm1976 · driest 18 mm in 1965	52
July	35.0°C8 Jul 2010	2.5°C2 Jul 1992	85 mm14 Jul 1997	189 mm1995 · driest 39 mm in 1969	50
August	34.5°C9 Aug 2001	2.0°C27 Aug 1989	108 mm28 Aug 2011	233 mm2011 · driest 17 mm in 2012	52
September	33.5°C1 Sep 2010	-4.5°C29 Sep 1980	62 mm16 Sep 1999	188 mm1999 · driest 16 mm in 2016	51
October	28.0°C5 Oct 1991	-7.0°C11 Oct 1993	66 mm7 Oct 2005	222 mm2005 · driest 12 mm in 1963	52
November	21.1°C2 Nov 1971	-21.1°C29 Nov 1978	99 mm8 Nov 1996	209 mm1983 · driest 7 mm in 2012	51
December	17.0°C6 Dec 2001	-32.5°C30 Dec 1989	67 mm14 Dec 2003	196 mm2003 · driest 3 mm in 2014	52

Typical days per month at IBERVILLE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	2	9
February	0	0	25	2	8
March	0	0	24	3	6
April	<1	0	11	4	1
May	4	<1	1	4	0
June	13	3	0	3	0
July	19	4	0	5	0
August	17	3	0	3	0
September	5	<1	<1	4	0
October	<1	0	6	3	<1
November	0	0	16	3	2
December	0	0	24	3	8

How often, not how much — every day in IBERVILLE’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%	36%	7%	51%	-9.2–-1.5°C
February	0%	33%	7%	44%	-6.8–-0.2°C
March	<1%	31%	8%	43%	-0.1–5.6°C
April	6%	32%	11%	40%	9.0–13.7°C
May	29%	36%	10%	49%	16.0–21.3°C
June	55%	37%	10%	53%	22.1–25.4°C
July	63%	36%	13%	49%	24.4–27.5°C
August	60%	35%	11%	45%	23.4–26.5°C
September	37%	33%	11%	46%	18.4–22.5°C
October	8%	36%	9%	49%	10.7–15.1°C
November	<1%	39%	10%	59%	3.4–8.3°C
December	0%	40%	9%	59%	-4.9–1.5°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.

1963Each stripe is one year’s mean temperature against the 46-year average. Warmest: 2010. Coolest: 1992.2010

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 6138495
NOAA station: CA007023270 · IBERVILLE
Station distance: 3.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 45.31°, 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 IBERVILLE is what differs

Mont-Saint-Grégoire→Parc-Boutin→Domaine-Deland→Domaine-Forestier→Iberville→Saint-Luc→

Or put two places side by side: Saint-Jean-sur-Richelieu vs Mont-Saint-Grégoire

Best time to visitSaint-Jean-sur-Richelieu.