United States · 1991–2020

Best time to visit
Sudden Valley.

July leads for comfortable weather in Sudden Valley: typically 23.5°C by day, 12.4°C at night, with 25 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high23.5°C

Typical low12.4°C

Rain in July25 mm

Comfort

July

July · August · June

93climate match

Beach

July

July · August · June

58climate match

Outdoors

September

September · June · July

92climate match

The weakest month is January, scoring 5 against July’s 93 — days reach only 8.3°C, 16° 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

58.3° / 1.9°

Feb

149.5° / 2°

Mar

2211.8° / 3.7°

Apr

4014.8° / 5.6°

May

6118.2° / 8.4°

Jun

7620.6° / 10.7°

Jul

9323.5° / 12.4°

Aug

9223.4° / 12.5°

Sep

7320° / 10.3°

Oct

3915° / 7.2°

Nov

910.7° / 4.1°

Dec

57.8° / 1.8°

Monthly climate evidence for Sudden Valley — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 42 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	8.3°C	1.9°C	116 mm	15.7	7.4°C	8 h 41	5	Strong coverage
February	9.5°C	2°C	78 mm	12.6	7.4°C	10 h 05	14	Strong coverage
March	11.8°C	3.7°C	86 mm	14.7	8.0°C	11 h 43	22	Strong coverage
April	14.8°C	5.6°C	70 mm	11.6	9.4°C	13 h 37	40	Strong coverage
May	18.2°C	8.4°C	59 mm	8.7	11.5°C	15 h 13	61	Strong coverage
June	20.6°C	10.7°C	43 mm	7.6	13.6°C	16 h 08	76	Strong coverage
July	23.5°C	12.4°C	25 mm	4	15.1°C	15 h 46	93	Strong coverage
August	23.4°C	12.5°C	28 mm	4.4	15.5°C	14 h 21	92	Strong coverage
September	20°C	10.3°C	50 mm	7	13.8°C	12 h 31	73	Strong coverage
October	15°C	7.2°C	101 mm	12.1	11.1°C	10 h 42	39	Strong coverage
November	10.7°C	4.1°C	145 mm	16.5	9.2°C	9 h 06	9	Strong coverage
December	7.8°C	1.8°C	114 mm	16.3	8.0°C	8 h 17	5	Strong coverage

Records at BELLINGHAM 3 SSW, 1985–2023
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.3°C8 Jan 1986	-12.8°C30 Jan 1996	66 mm5 Jan 2015	206 mm2006 · driest 42 mm in 1994	38
February	18.9°C27 Feb 1986	-15.0°C1 Feb 1989	49 mm15 Feb 2016	155 mm2016 · driest 8 mm in 1993	38
March	25.6°C29 Mar 2004	-8.3°C3 Mar 1989	46 mm30 Mar 1999	159 mm1999 · driest 26 mm in 1992	38
April	26.1°C18 Apr 2016	-4.4°C5 Apr 2023	39 mm14 Apr 2000	131 mm1992 · driest 12 mm in 2004	38
May	30.0°C2 May 2016	-1.1°C12 May 1992	40 mm28 May 2010	110 mm2000 · driest 12 mm in 1995	38
June	30.0°C28 Jun 2021	2.8°C18 Jun 1992	31 mm10 Jun 1988	94 mm2022 · driest 10 mm in 2009	38
July	33.3°C30 Jul 2009	5.0°C10 Jul 2003	38 mm5 Jul 1992	60 mm2000 · driest 0 mm in 2021	38
August	32.8°C11 Aug 1990	6.1°C24 Aug 2021	48 mm21 Aug 1989	111 mm2004 · driest 0 mm in 1986	38
September	29.4°C2 Sep 2017	2.2°C16 Sep 2021	59 mm16 Sep 1987	151 mm2021 · driest 2 mm in 1991	38
October	23.9°C23 Oct 1992	-5.0°C31 Oct 2006	70 mm17 Oct 2009	233 mm2003 · driest 4 mm in 1987	37
November	23.9°C8 Nov 2016	-15.6°C27 Nov 1985	83 mm15 Nov 2021	355 mm2021 · driest 53 mm in 1993	38
December	19.4°C10 Dec 2014	-16.1°C27 Dec 2021	56 mm12 Dec 2010	201 mm2015 · driest 22 mm in 1985	38

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

How often, not how much — every day in BELLINGHAM 3 SSW’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%	50%	12%	68%	6.3–10.2°C
February	0%	43%	7%	58%	7.0–11.7°C
March	<1%	46%	7%	62%	9.8–13.6°C
April	4%	39%	6%	54%	13.0–15.7°C
May	23%	29%	7%	36%	16.1–19.8°C
June	48%	25%	4%	26%	18.7–21.9°C
July	82%	12%	2%	8%	21.7–25.1°C
August	82%	13%	2%	12%	22.1–24.8°C
September	45%	22%	5%	27%	18.6–21.2°C
October	4%	39%	11%	56%	13.9–16.2°C
November	<1%	55%	17%	75%	9.0–12.5°C
December	0%	52%	11%	71%	5.0–9.2°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.

1986Each stripe is one year’s mean temperature against the 36-year average. Warmest: 2016. Coolest: 2008.2022

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5812434
NOAA station: USC00450587 · BELLINGHAM 3 SSW
Station distance: 12.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 48.72°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 42 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 BELLINGHAM 3 SSW is what differs

Bellingham→Geneva→Agate Bay→Alabama Hill→Atlanta (historical)→Beach→

Or put two places side by side: Sudden Valley vs Bellingham

Best time to visitSudden Valley.

July

July

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Sudden Valley.

The whole year,
without the guesswork.

Nearby, measured,
and named.