Canada · 1991–2020

Best time to visit
Rockwood.

August leads for comfortable weather in Rockwood: typically 24.7°C by day, 14.1°C at night, with 85 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high24.7°C

Typical low14.1°C

Rain in August85 mm

Comfort

August

August · July · June

84climate match

Beach

July

July · August · June

56climate match

Outdoors

September

September · May · June

82climate match

The weakest month is January, scoring 5 against August’s 84 — days reach only -3.2°C, 27° 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

5-3.2° / -10.7°

Feb

5-2.1° / -10.7°

Mar

53.1° / -6.3°

Apr

1510.5° / 0.5°

May

5318.2° / 7.2°

Jun

7823.2° / 12.5°

Jul

8225.5° / 14.8°

Aug

8424.7° / 14.1°

Sep

6820.8° / 10.2°

Oct

3013.2° / 4.3°

Nov

55.8° / -1.3°

Dec

5-0.2° / -6.5°

Monthly climate evidence for Rockwood — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-3.2°C	-10.7°C	82 mm	14.8	9 h 16	5	Strong coverage
February	-2.1°C	-10.7°C	62 mm	11.7	10 h 25	5	Strong coverage
March	3.1°C	-6.3°C	64 mm	10.2	11 h 47	5	Strong coverage
April	10.5°C	0.5°C	85 mm	11	13 h 21	15	Strong coverage
May	18.2°C	7.2°C	85 mm	10.5	14 h 41	53	Strong coverage
June	23.2°C	12.5°C	94 mm	10	15 h 25	78	Strong coverage
July	25.5°C	14.8°C	88 mm	9.4	15 h 08	82	Strong coverage
August	24.7°C	14.1°C	85 mm	8.7	13 h 59	84	Strong coverage
September	20.8°C	10.2°C	83 mm	9.2	12 h 27	68	Strong coverage
October	13.2°C	4.3°C	87 mm	11.9	10 h 56	30	Strong coverage
November	5.8°C	-1.3°C	85 mm	12.3	9 h 36	5	Strong coverage
December	-0.2°C	-6.5°C	75 mm	13.8	8 h 57	5	Strong coverage

What has changed

Rockwood runs +1.7°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

+1.9

Feb

+2.0

Mar

+2.1

Apr

+0.7

May

+2.1

Jun

+1.6

Jul

+1.3

Aug

+1.4

Sep

+2.3

Oct

+1.3

Nov

+1.0

Dec

+2.8

August daytime highs, 2011–2023. Last recorded: 23.5°C.

Records at FERGUS SHAND DAM, 1939–2024
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.6°C25 Jan 1950	-33.3°C30 Jan 1948	61 mm11 Jan 2020	154 mm2020 · driest 21 mm in 1961	84
February	14.5°C23 Feb 2017	-32.8°C10 Feb 1948	43 mm9 Feb 2001	131 mm2001 · driest 14 mm in 1978	85
March	26.0°C21 Mar 2012	-31.7°C5 Mar 1948	42 mm16 Mar 1942	155 mm2016 · driest 4 mm in 1962	84
April	29.0°C28 Apr 1990	-17.2°C7 Apr 1972	67 mm9 Apr 1991	152 mm1991 · driest 21 mm in 1941	85
May	32.0°C29 May 2006	-6.1°C7 May 1966	88 mm24 May 1955	160 mm1983 · driest 16 mm in 1950	83
June	34.0°C25 Jun 1988	-0.6°C5 Jun 1964	114 mm10 Jun 1967	309 mm1967 · driest 16 mm in 1988	83
July	35.5°C6 Jul 1988	2.2°C16 Jul 1950	81 mm19 Jul 1987	182 mm2013 · driest 10 mm in 1989	83
August	35.0°C3 Aug 1955	-0.6°C25 Aug 1942	118 mm5 Aug 1968	218 mm1985 · driest 29 mm in 1960	84
September	35.0°C2 Sep 1953	-5.0°C27 Sep 1965	106 mm10 Sep 1986	310 mm1986 · driest 11 mm in 1960	82
October	28.9°C6 Oct 1946	-11.7°C29 Oct 1965	79 mm15 Oct 1954	217 mm1954 · driest 19 mm in 1961	84
November	24.4°C1 Nov 1950	-18.3°C30 Nov 1958	61 mm24 Nov 1950	178 mm1950 · driest 23 mm in 2012	84
December	17.5°C3 Dec 1982	-34.4°C20 Dec 1942	39 mm27 Dec 1942	172 mm2016 · driest 19 mm in 1960	85

Typical days per month at FERGUS SHAND DAM, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	2	16
February	0	0	27	2	12
March	<1	0	27	2	7
April	<1	0	16	3	3
May	5	<1	2	3	<1
June	11	2	0	3	0
July	19	3	0	3	0
August	16	2	0	3	0
September	7	<1	<1	3	0
October	<1	0	6	3	<1
November	0	0	20	3	6
December	0	0	29	2	13

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 89); on 2011–2025 it is August (87). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in FERGUS SHAND DAM’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%	6%	62%	-7.0–-0.7°C
February	0%	40%	6%	56%	-5.9–0.4°C
March	<1%	35%	7%	48%	-0.9–6.1°C
April	6%	34%	9%	44%	7.0–12.7°C
May	27%	32%	9%	40%	14.2–20.4°C
June	53%	30%	10%	34%	20.6–24.4°C
July	69%	27%	9%	30%	23.4–27.2°C
August	66%	27%	9%	29%	22.4–26.3°C
September	39%	30%	9%	38%	18.0–22.7°C
October	11%	33%	9%	44%	10.9–16.2°C
November	<1%	40%	9%	56%	2.9–8.2°C
December	0%	43%	7%	63%	-3.9–1.8°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.

1940Each stripe is one year’s mean temperature against the 77-year average. Warmest: 2012. Coolest: 1943.2023

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 6126540
NOAA station: CA006142400 · FERGUS SHAND DAM
Station distance: 19.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 43.62°, 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 FERGUS SHAND DAM is what differs

Belwood→Birge Mills→Brucedale→Cedar Valley→Centre Inn→Coningsby→

Or put two places side by side: Rockwood vs Belwood

Best time to visitRockwood.