Canada · 1991–2020

Best time to visit
Grimsby.

June leads for comfortable weather in Grimsby: typically 24.8°C by day, 14.5°C at night, with 88 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high24.8°C

Typical low14.5°C

Rain in June88 mm

Comfort

June

June · September · August

82climate match

Beach

July

July · August · June

73climate match

Outdoors

May

May · September · June

82climate match

The weakest month is January, scoring 5 against June’s 82 — days reach only 0.2°C, 24° 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

50.2° / -6.8°

Feb

50.8° / -7°

Mar

55.7° / -2.6°

Apr

2212.1° / 2.5°

May

6319.9° / 8.9°

Jun

8224.8° / 14.5°

Jul

7028° / 17.6°

Aug

7826.8° / 16.9°

Sep

8222.7° / 13.5°

Oct

4015.6° / 7.4°

Nov

148.7° / 1.4°

Dec

52.7° / -3.2°

Monthly climate evidence for Grimsby — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 20 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	0.2°C	-6.8°C	72 mm	11.1	3.5°C	9 h 19	5	Good coverage
February	0.8°C	-7°C	73 mm	10	2.8°C	10 h 26	5	Good coverage
March	5.7°C	-2.6°C	79 mm	9	2.8°C	11 h 47	5	Good coverage
April	12.1°C	2.5°C	103 mm	11.1	3.9°C	13 h 20	22	Good coverage
May	19.9°C	8.9°C	82 mm	9.7	7.6°C	14 h 39	63	Good coverage
June	24.8°C	14.5°C	88 mm	10.7	15.0°C	15 h 22	82	Good coverage
July	28°C	17.6°C	82 mm	8.7	19.8°C	15 h 05	70	Good coverage
August	26.8°C	16.9°C	74 mm	7.6	21.1°C	13 h 57	78	Good coverage
September	22.7°C	13.5°C	77 mm	8.9	19.0°C	12 h 27	82	Good coverage
October	15.6°C	7.4°C	105 mm	12.9	13.0°C	10 h 57	40	Good coverage
November	8.7°C	1.4°C	76 mm	9.3	7.5°C	9 h 39	14	Good coverage
December	2.7°C	-3.2°C	82 mm	10.9	4.9°C	9 h	5	Good coverage

Records at GRIMSBY MOUNTAIN, 2005–2024
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.4°C13 Jan 2013	-23.0°C6 Jan 2018	52 mm11 Jan 2020	136 mm2024 · driest 40 mm in 2010	19
February	19.5°C23 Feb 2017	-26.7°C16 Feb 2015	39 mm24 Feb 2016	131 mm2008 · driest 33 mm in 2024	19
March	25.1°C22 Mar 2012	-20.3°C4 Mar 2014	47 mm5 Mar 2011	141 mm2023 · driest 21 mm in 2013	19
April	29.2°C27 Apr 2009	-7.0°C1 Apr 2019	52 mm20 Apr 2017	180 mm2017 · driest 53 mm in 2012	19
May	34.0°C28 May 2016	-2.0°C9 May 2020	42 mm28 May 2013	178 mm2017 · driest 16 mm in 2016	18
June	35.1°C27 Jun 2007	5.0°C3 Jun 2019	55 mm27 Jun 2015	143 mm2013 · driest 22 mm in 2007	18
July	38.5°C21 Jul 2011	9.4°C1 Jul 2010	69 mm19 Jul 2008	186 mm2023 · driest 28 mm in 2020	18
August	36.2°C2 Aug 2007	8.8°C31 Aug 2009	55 mm21 Aug 2010	167 mm2008 · driest 2 mm in 2005	19
September	35.0°C6 Sep 2007	3.7°C17 Sep 2013	80 mm22 Sep 2021	224 mm2021 · driest 25 mm in 2023	19
October	32.0°C1 Oct 2019	-4.5°C31 Oct 2020	58 mm8 Oct 2017	232 mm2021 · driest 54 mm in 2022	19
November	26.0°C5 Nov 2022	-13.0°C13 Nov 2019	59 mm1 Nov 2018	125 mm2018 · driest 16 mm in 2012	19
December	17.5°C11 Dec 2021	-22.0°C28 Dec 2017	43 mm21 Dec 2013	133 mm2007 · driest 22 mm in 2010	19

Typical days per month at GRIMSBY MOUNTAIN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	2	13
February	0	0	25	2	12
March	<1	0	21	3	5
April	<1	0	7	4	2
May	7	2	<1	3	<1
June	15	4	0	3	0
July	24	9	0	2	0
August	22	6	0	2	0
September	9	2	0	3	0
October	2	<1	1	3	<1
November	0	0	12	2	3
December	0	0	23	3	9

How often, not how much — every day in GRIMSBY MOUNTAIN’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%	35%	8%	48%	-2.6–2.7°C
February	0%	34%	8%	40%	-2.3–4.0°C
March	1%	30%	8%	37%	3.6–8.8°C
April	8%	37%	12%	56%	10.4–14.1°C
May	35%	30%	8%	39%	17.5–22.2°C
June	58%	36%	11%	44%	23.3–26.6°C
July	70%	29%	8%	36%	25.9–30.4°C
August	73%	25%	7%	23%	25.2–28.4°C
September	51%	30%	9%	41%	21.4–24.4°C
October	13%	41%	11%	55%	14.2–17.9°C
November	2%	30%	6%	41%	6.4–11.8°C
December	0%	36%	9%	45%	-0.2–5.9°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5967149
NOAA station: CA006133055 · GRIMSBY MOUNTAIN
Station distance: 1.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 43.20°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 20 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
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 GRIMSBY MOUNTAIN is what differs

Abingdon→Allen's Corners→Basingstoke→Caistor Centre→Caistorville→Canborough→

Or put two places side by side: Grimsby vs Abingdon

Best time to visitGrimsby.

June

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Grimsby.

The whole year,
without the guesswork.

Nearby, measured,
and named.