United States · 1991–2020

Best time to visit
Birch Bay.

July leads for comfortable weather in Birch Bay: typically 22.3°C by day, 12.6°C at night, with 30 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.3°C

Typical low12.6°C

Rain in July30 mm

Comfort

July

July · August · June

89climate match

Beach

July

July · August · June

55climate match

Outdoors

June

June · September · July

90climate match

The weakest month is January, scoring 5 against July’s 89 — days reach only 6.9°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

56.9° / 1.2°

Feb

88.3° / 1.4°

Mar

1410.7° / 2.9°

Apr

3513.8° / 5.2°

May

5717.5° / 8.2°

Jun

7219.9° / 10.8°

Jul

8922.3° / 12.6°

Aug

8822.3° / 12.5°

Sep

6819.2° / 10°

Oct

3213.9° / 6.6°

Nov

59.6° / 3.5°

Dec

56.4° / 1°

Monthly climate evidence for Birch Bay — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 11 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	6.9°C	1.2°C	155 mm	16.4	7.4°C	8 h 40	5	Strong coverage
February	8.3°C	1.4°C	87 mm	12.5	7.4°C	10 h 04	8	Strong coverage
March	10.7°C	2.9°C	107 mm	14.8	8.0°C	11 h 43	14	Strong coverage
April	13.8°C	5.2°C	77 mm	12.1	9.4°C	13 h 37	35	Strong coverage
May	17.5°C	8.2°C	64 mm	9.1	11.5°C	15 h 15	57	Strong coverage
June	19.9°C	10.8°C	48 mm	8.3	13.6°C	16 h 10	72	Strong coverage
July	22.3°C	12.6°C	30 mm	4.4	15.1°C	15 h 48	89	Strong coverage
August	22.3°C	12.5°C	29 mm	4.7	15.5°C	14 h 22	88	Strong coverage
September	19.2°C	10°C	57 mm	7.4	13.8°C	12 h 31	68	Strong coverage
October	13.9°C	6.6°C	109 mm	12.9	11.1°C	10 h 42	32	Strong coverage
November	9.6°C	3.5°C	154 mm	16.8	9.2°C	9 h 05	5	Strong coverage
December	6.4°C	1°C	144 mm	16.9	8.0°C	8 h 16	5	Strong coverage

What has changed

Birch Bay runs +0.5°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

+1.5

Feb

-1.0

Mar

+0.2

Apr

+0.4

May

+0.9

Jun

+0.1

Jul

+0.6

Aug

+0.9

Sep

+0.4

Oct

+0.2

Nov

+0.8

Dec

+0.6

July daytime highs, 2011–2021. Last recorded: 23.7°C.

Records at BLAINE, 1893–2021
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.8°C30 Jan 1940	-18.3°C18 Jan 1950	127 mm7 Jan 1945	418 mm2020 · driest 26 mm in 1949	117
February	20.0°C27 Feb 1986	-22.8°C7 Feb 1936	54 mm26 Feb 1932	238 mm1965 · driest 1 mm in 1925	116
March	25.6°C30 Mar 1925	-11.7°C10 Mar 1951	71 mm8 Mar 1916	259 mm1916 · driest 14 mm in 1912	116
April	28.3°C18 Apr 2016	-6.1°C3 Apr 1936	66 mm9 Apr 1894	209 mm1894 · driest 7 mm in 1918	116
May	30.0°C2 May 2016	-6.1°C14 May 1899	90 mm4 May 2014	178 mm2014 · driest 1 mm in 1924	115
June	36.7°C29 Jun 2021	-0.6°C3 Jun 2011	48 mm25 Jun 1905	152 mm1931 · driest 0 mm in 1922	116
July	35.0°C30 Jul 1925	1.1°C7 Jul 1898	42 mm10 Jul 1932	99 mm1932 · driest 0 mm in 1958	116
August	36.1°C13 Aug 2021	0.6°C25 Aug 1910	70 mm15 Aug 1989	133 mm1989 · driest 0 mm in 1986	111
September	30.6°C4 Sep 2017	-3.9°C25 Sep 1908	56 mm11 Sep 1920	185 mm1920 · driest 4 mm in 1975	115
October	25.6°C3 Oct 1984	-7.2°C29 Oct 1991	89 mm23 Oct 1944	327 mm1933 · driest 12 mm in 2002	114
November	21.7°C8 Nov 2016	-15.0°C11 Nov 1911	97 mm14 Nov 2021	405 mm2021 · driest 23 mm in 1952	117
December	17.2°C10 Dec 2014	-18.3°C29 Dec 1968	66 mm23 Dec 1910	339 mm1917 · driest 32 mm in 1985	115

Typical days per month at BLAINE, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	12	5	1
February	0	11	3	<1
March	0	7	3	<1
April	<1	2	2	0
May	<1	<1	2	0
June	2	0	1	0
July	5	0	1	0
August	4	0	1	0
September	<1	0	2	0
October	0	1	4	<1
November	0	7	6	<1
December	0	12	5	<1

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 87); on 2011–2025 it is August (95). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in BLAINE’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%	51%	16%	68%	3.2–9.0°C
February	0%	46%	12%	63%	5.7–11.0°C
March	<1%	44%	9%	58%	8.9–12.6°C
April	4%	35%	6%	45%	12.5–15.7°C
May	21%	28%	6%	33%	15.8–19.4°C
June	49%	25%	5%	27%	18.7–22.3°C
July	79%	14%	3%	11%	20.9–24.7°C
August	76%	16%	3%	16%	21.1–24.0°C
September	38%	25%	7%	31%	17.7–20.9°C
October	3%	40%	12%	57%	12.9–16.0°C
November	0%	53%	18%	73%	7.7–11.4°C
December	0%	55%	17%	74%	4.0–8.4°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.

1903Each stripe is one year’s mean temperature against the 99-year average. Warmest: 2015. Coolest: 1955.2020

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5787316
NOAA station: USC00450729 · BLAINE
Station distance: 8.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 48.92°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 11 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 BLAINE is what differs

Blaine→Douglas→Custer→Cottonwood Beach→Kickerville→Pleasant Valley→

Or put two places side by side: Birch Bay vs Blaine

Best time to visitBirch Bay.

July

July

June

The whole year,without the guesswork.

Birch Bay runs +0.5°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Birch Bay.

The whole year,
without the guesswork.

Birch Bay runs +0.5°C
on the 1961–1990 baseline.

Nearby, measured,
and named.