United States · 1991–2020

Best time to visit
Penobscot.

July leads for comfortable weather in Penobscot: typically 25.6°C by day, 14.1°C at night, with 78 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high25.6°C

Typical low14.1°C

Rain in July78 mm

Comfort

July

July · August · June

83climate match

Beach

July

July · August · June

58climate match

Outdoors

September

September · June · May

79climate match

The weakest month is January, scoring 5 against July’s 83 — days reach only -0.8°C, 25° 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

5-0.8° / -11.7°

Feb

50.7° / -10.9°

Mar

54.9° / -6°

Apr

1611.5° / 0°

May

4917.7° / 5.5°

Jun

7122.5° / 10.7°

Jul

8325.6° / 14.1°

Aug

8325.3° / 13.5°

Sep

6821.4° / 9.3°

Oct

3014.7° / 3.7°

Nov

58.2° / -1.4°

Dec

52.2° / -7.2°

Monthly climate evidence for Penobscot — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 16 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-0.8°C	-11.7°C	103 mm	8.1	3.7°C	9 h 11	5	Strong coverage
February	0.7°C	-10.9°C	81 mm	6.8	1.9°C	10 h 22	5	Strong coverage
March	4.9°C	-6°C	98 mm	7.3	1.9°C	11 h 46	5	Strong coverage
April	11.5°C	0°C	111 mm	8.9	4.2°C	13 h 24	16	Strong coverage
May	17.7°C	5.5°C	94 mm	9	7.6°C	14 h 46	49	Strong coverage
June	22.5°C	10.7°C	114 mm	8.5	11.0°C	15 h 31	71	Strong coverage
July	25.6°C	14.1°C	78 mm	7.6	13.7°C	15 h 13	83	Strong coverage
August	25.3°C	13.5°C	80 mm	7.2	14.6°C	14 h 02	83	Strong coverage
September	21.4°C	9.3°C	102 mm	6.6	14.0°C	12 h 28	68	Strong coverage
October	14.7°C	3.7°C	137 mm	8.5	12.1°C	10 h 54	30	Strong coverage
November	8.2°C	-1.4°C	119 mm	8.4	9.4°C	9 h 32	5	Strong coverage
December	2.2°C	-7.2°C	118 mm	9.5	6.4°C	8 h 51	5	Strong coverage

What has changed

Penobscot runs -0.9°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

-0.8

Feb

-1.2

Mar

-1.9

Apr

-1.1

May

-1.5

Jun

-2.0

Jul

-1.0

Aug

-0.6

Sep

+0.1

Oct

-0.4

Nov

-0.6

Dec

0.0

July daytime highs, 2011–2022. Last recorded: 27.6°C.

Records at BELFAST, 1901–2022
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.0°C6 Jan 2007	-33.3°C14 Jan 1957	86 mm5 Jan 1992	260 mm1979 · driest 19 mm in 1965	80
February	18.3°C24 Feb 2022	-33.3°C2 Feb 1962	73 mm26 Feb 1961	200 mm1955 · driest 14 mm in 1994	81
March	27.8°C31 Mar 1998	-27.8°C4 Mar 1950	118 mm10 Mar 1903	321 mm1902 · driest 6 mm in 1965	81
April	29.4°C29 Apr 2009	-12.2°C4 Apr 1954	121 mm28 Apr 2005	347 mm1983 · driest 10 mm in 1999	81
May	35.0°C22 May 1992	-5.6°C3 May 1966	90 mm17 May 1948	250 mm1989 · driest 7 mm in 1992	82
June	35.6°C10 Jun 1984	0.6°C3 Jun 1945	97 mm20 Jun 2009	228 mm2006 · driest 22 mm in 1971	82
July	36.7°C19 Jul 1946	6.1°C17 Jul 1946	132 mm13 Jul 1996	258 mm2021 · driest 8 mm in 1965	82
August	36.7°C26 Aug 1948	1.7°C30 Aug 1982	87 mm1 Aug 1985	175 mm1991 · driest 16 mm in 1948	82
September	36.7°C7 Sep 1945	-4.4°C14 Sep 1955	117 mm7 Sep 2008	257 mm2021 · driest 16 mm in 1948	82
October	30.6°C1 Oct 1950	-8.3°C31 Oct 1904	220 mm1 Oct 2015	411 mm2005 · driest 4 mm in 1947	82
November	22.8°C1 Nov 1974	-16.7°C24 Nov 1989	117 mm3 Nov 1966	327 mm1983 · driest 34 mm in 1902	80
December	18.3°C5 Dec 1982	-32.8°C26 Dec 1980	91 mm17 Dec 1973	249 mm1969 · driest 29 mm in 1989	80

Typical days per month at BELFAST, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	3	5
February	0	0	27	3	5
March	<1	0	28	4	3
April	<1	0	17	3	<1
May	3	<1	2	3	0
June	10	2	0	4	0
July	19	3	0	3	0
August	18	2	0	3	0
September	5	<1	<1	3	0
October	<1	0	8	4	<1
November	0	0	20	4	<1
December	0	0	29	4	4

How often, not how much — every day in BELFAST’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%	26%	11%	26%	-2.7–2.0°C
February	0%	25%	11%	24%	-1.0–3.1°C
March	<1%	25%	12%	24%	3.4–8.1°C
April	5%	29%	12%	33%	10.0–13.4°C
May	29%	30%	11%	35%	15.5–20.2°C
June	60%	29%	11%	30%	20.5–25.2°C
July	73%	26%	9%	27%	24.2–27.7°C
August	75%	24%	8%	20%	24.1–27.1°C
September	52%	23%	9%	22%	19.8–22.8°C
October	12%	25%	12%	26%	13.5–16.8°C
November	<1%	31%	14%	36%	6.4–10.1°C
December	0%	28%	13%	32%	-0.9–5.0°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.

1902Each stripe is one year’s mean temperature against the 75-year average. Warmest: 1999. Coolest: 2015.2021

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4974967
NOAA station: USC00170480 · BELFAST
Station distance: 23.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 44.46°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 16 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 BELFAST is what differs

Belfast→Lincolnville→Deer Isle→Stockton Springs→Swanville→Northport→

Or put two places side by side: Penobscot vs Belfast

Best time to visitPenobscot.

July

July

September

The whole year,without the guesswork.

Penobscot runs -0.9°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Penobscot.

The whole year,
without the guesswork.

Penobscot runs -0.9°C
on the 1961–1990 baseline.

Nearby, measured,
and named.