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Canada · 1991–2020

Best time to visit
Deroche.

July leads for comfortable weather in Deroche: typically 25.4°C by day, 13.7°C at night, with 49 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high25.4°C

Typical low13.7°C

Rain in July49 mm

Comfort

July

July · August · September

89climate match

Beach

July

July · August · September

63climate match

Outdoors

September

September · May · June

75climate match

The weakest month is January, scoring 5 against July’s 89 — days reach only 7°C, 17° 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

57° / 1.2°

Feb

59.3° / 2.5°

Mar

511.6° / 3.9°

Apr

3115.7° / 6.3°

May

5519.1° / 9.3°

Jun

7221.9° / 11.8°

Jul

8925.4° / 13.7°

Aug

8925.3° / 13.7°

Sep

7522.2° / 11.3°

Oct

2715.7° / 7.8°

Nov

510° / 4.2°

Dec

57.2° / 1.7°

Monthly climate evidence for Deroche — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	7°C	1.2°C	274 mm	18	8 h 37	5	Strong coverage
February	9.3°C	2.5°C	142 mm	13.5	10 h 03	5	Good coverage
March	11.6°C	3.9°C	223 mm	17.3	11 h 43	5	Good coverage
April	15.7°C	6.3°C	149 mm	14.4	13 h 38	31	Good coverage
May	19.1°C	9.3°C	111 mm	11.9	15 h 17	55	Good coverage
June	21.9°C	11.8°C	90 mm	11.3	16 h 12	72	Strong coverage
July	25.4°C	13.7°C	49 mm	5.9	15 h 50	89	Good coverage
August	25.3°C	13.7°C	52 mm	5.8	14 h 24	89	Good coverage
September	22.2°C	11.3°C	94 mm	8.1	12 h 32	75	Good coverage
October	15.7°C	7.8°C	199 mm	14.4	10 h 41	27	Good coverage
November	10°C	4.2°C	294 mm	18.6	9 h 03	5	Strong coverage
December	7.2°C	1.7°C	254 mm	18.4	8 h 13	5	Good coverage

Records at SUMAS CANAL, 1958–2023
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	19.5°C19 Jan 2005	-15.0°C21 Jan 2012	109 mm18 Jan 1968	377 mm2020 · driest 56 mm in 2000	43
February	19.4°C27 Feb 1968	-17.0°C2 Feb 1989	74 mm18 Feb 1995	386 mm1961 · driest 6 mm in 1993	39
March	24.0°C28 Mar 1994	-7.0°C8 Mar 2002	100 mm31 Mar 1959	327 mm2017 · driest 34 mm in 1992	37
April	30.0°C30 Apr 1998	-0.6°C13 Apr 1968	84 mm29 Apr 1959	272 mm1959 · driest 35 mm in 2004	39
May	34.0°C14 May 2023	0.0°C4 May 1969	51 mm21 May 2012	219 mm1960 · driest 19 mm in 2018	41
June	42.0°C28 Jun 2021	4.4°C30 Jun 1966	75 mm1 Jun 1968	168 mm1990 · driest 3 mm in 2015	45
July	37.2°C12 Jul 1961	6.0°C7 Jul 2015	55 mm12 Jul 1988	120 mm1964 · driest 0 mm in 2021	44
August	37.0°C12 Aug 2021	3.3°C12 Aug 1968	54 mm29 Aug 2005	207 mm1991 · driest 2 mm in 2012	41
September	35.5°C4 Sep 2017	1.0°C23 Sep 2015	115 mm19 Sep 2021	218 mm1959 · driest 3 mm in 2022	42
October	28.0°C3 Oct 2022	-1.5°C28 Oct 1991	86 mm16 Oct 2003	366 mm1967 · driest 23 mm in 2002	42
November	21.0°C8 Nov 2016	-14.0°C26 Nov 1985	100 mm9 Nov 1990	437 mm1995 · driest 50 mm in 2000	44
December	18.0°C9 Dec 2014	-25.0°C29 Dec 1968	126 mm27 Dec 2022	390 mm1966 · driest 41 mm in 1985	44

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

How often, not how much — every day in SUMAS CANAL’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%	58%	26%	73%	3.9–9.1°C
February	0%	53%	21%	68%	6.7–11.8°C
March	2%	52%	20%	69%	9.5–13.3°C
April	13%	48%	17%	64%	13.0–16.7°C
May	32%	39%	12%	51%	16.1–21.1°C
June	51%	35%	9%	41%	19.7–23.8°C
July	75%	20%	5%	20%	21.9–27.8°C
August	74%	21%	6%	25%	22.3–26.9°C
September	56%	29%	11%	34%	19.4–24.1°C
October	13%	47%	21%	65%	14.0–17.1°C
November	0%	61%	29%	81%	7.7–11.7°C
December	0%	59%	27%	77%	4.1–8.7°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.

1959Each stripe is one year’s mean temperature against the 26-year average. Warmest: 1998. Coolest: 1964.2012

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5938097
NOAA station: CA001107785 · SUMAS CANAL
Station distance: 8.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 49.18°, 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 SUMAS CANAL is what differs

Yarrow→Greendale→Arnold→Atchelitz→Barrowtown→Kilgard→

Or put two places side by side: Deroche vs Yarrow

Best time to visitDeroche.

July

July

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Deroche.

The whole year,
without the guesswork.

Nearby, measured,
and named.