United States · 1991–2020

Best time to visit
Duluth Heights.

August leads for comfortable weather in Duluth Heights: typically 23.8°C by day, 12.9°C at night, with 95 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high23.8°C

Typical low12.9°C

Rain in August95 mm

Comfort

August

August · July · June

83climate match

Beach

July

July · August · June

49climate match

Outdoors

September

September · June · August

78climate match

The weakest month is January, scoring 5 against August’s 83 — days reach only -7.2°C, 31° 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

5-7.2° / -16.4°

Feb

5-4.5° / -14.5°

Mar

51.8° / -7.9°

Apr

139° / -1.1°

May

4516.7° / 5°

Jun

6721.8° / 10.2°

Jul

8024.9° / 13.5°

Aug

8323.8° / 12.9°

Sep

5919° / 8.6°

Oct

2311° / 2°

Nov

52.4° / -5.2°

Dec

5-4.5° / -12.4°

Monthly climate evidence for Duluth Heights — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 21 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-7.2°C	-16.4°C	24 mm	5.5	2.1°C	8 h 55	5	Strong coverage
February	-4.5°C	-14.5°C	26 mm	5.2	1.3°C	10 h 13	5	Strong coverage
March	1.8°C	-7.9°C	37 mm	6.3	1.3°C	11 h 45	5	Strong coverage
April	9°C	-1.1°C	64 mm	8.1	2.0°C	13 h 31	13	Strong coverage
May	16.7°C	5°C	86 mm	9.8	3.3°C	15 h 00	45	Strong coverage
June	21.8°C	10.2°C	111 mm	9.5	6.4°C	15 h 50	67	Strong coverage
July	24.9°C	13.5°C	100 mm	9.2	12.9°C	15 h 31	80	Strong coverage
August	23.8°C	12.9°C	95 mm	8.2	16.9°C	14 h 12	83	Strong coverage
September	19°C	8.6°C	88 mm	8.8	14.5°C	12 h 30	59	Strong coverage
October	11°C	2°C	74 mm	8.8	9.8°C	10 h 48	23	Strong coverage
November	2.4°C	-5.2°C	50 mm	7.2	6.0°C	9 h 18	5	Strong coverage
December	-4.5°C	-12.4°C	37 mm	6.3	3.6°C	8 h 33	5	Strong coverage

What has changed

Duluth Heights runs +1.3°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

+2.2

Feb

+0.9

Mar

+2.1

Apr

-0.7

May

+0.7

Jun

+1.2

Jul

+1.1

Aug

+1.3

Sep

+2.7

Oct

+0.7

Nov

+1.4

Dec

+2.5

August daytime highs, 2011–2025. Last recorded: 23.4°C.

Records at DULUTH, 1948–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	8.9°C5 Jan 2012	-39.4°C15 Jan 1972	30 mm23 Jan 1969	120 mm1969 · driest 3 mm in 2008	79
February	12.8°C29 Feb 2000	-39.4°C2 Feb 1996	30 mm27 Feb 1998	69 mm1998 · driest 3 mm in 1988	79
March	23.9°C17 Mar 2012	-33.9°C2 Mar 1989	57 mm12 Mar 1977	130 mm1965 · driest 6 mm in 1959	79
April	31.1°C27 Apr 1952	-20.6°C3 Apr 1954	66 mm19 Apr 1948	208 mm2001 · driest 6 mm in 1987	79
May	33.3°C26 May 2018	-8.3°C3 May 1967	100 mm23 May 2010	195 mm1962 · driest 4 mm in 1976	79
June	34.4°C18 Jun 1995	-2.8°C10 Jun 1972	105 mm19 Jun 2012	255 mm2012 · driest 14 mm in 1995	79
July	36.1°C28 Jul 2006	1.7°C1 Jul 1988	86 mm21 Jul 1974	222 mm1999 · driest 21 mm in 2005	79
August	35.0°C7 Aug 1949	0.0°C27 Aug 1986	79 mm12 Aug 1999	262 mm1972 · driest 18 mm in 1970	78
September	36.1°C3 Sep 2023	-5.0°C26 Sep 1965	96 mm20 Sep 1972	263 mm2023 · driest 5 mm in 1952	78
October	30.0°C2 Oct 1953	-13.3°C27 Oct 1976	75 mm26 Oct 2010	191 mm1949 · driest 9 mm in 1953	78
November	23.9°C6 Nov 2020	-30.6°C30 Nov 1964	57 mm10 Nov 1998	129 mm2000 · driest 5 mm in 1976	78
December	12.8°C3 Dec 1962	-36.7°C20 Dec 1983	49 mm6 Dec 1950	94 mm1968 · driest 3 mm in 1997	78

Typical days per month at DULUTH, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	31	<1	13
February	0	0	28	<1	11
March	0	0	28	<1	8
April	<1	0	19	2	6
May	3	<1	4	3	<1
June	9	1	<1	4	0
July	16	4	0	3	0
August	13	2	0	3	0
September	4	<1	1	3	<1
October	<1	0	11	2	2
November	0	0	25	1	9
December	0	0	31	<1	13

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 85); on 2011–2025 it is August (89). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in DULUTH’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%	19%	1%	17%	-11.6–-4.4°C
February	0%	19%	1%	18%	-8.8–-1.1°C
March	<1%	22%	4%	22%	-2.6–4.6°C
April	6%	27%	7%	30%	5.9–11.7°C
May	24%	30%	8%	38%	14.0–18.9°C
June	47%	32%	12%	41%	19.8–23.6°C
July	66%	29%	10%	32%	22.8–26.8°C
August	62%	27%	10%	31%	21.2–25.6°C
September	30%	29%	9%	36%	16.0–20.9°C
October	8%	25%	6%	28%	8.6–13.6°C
November	<1%	23%	4%	25%	-1.6–5.3°C
December	0%	21%	3%	20%	-8.9–-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.

1948Each stripe is one year’s mean temperature against the 78-year average. Warmest: 2024. Coolest: 1950.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5024725
NOAA station: USW00014913 · DULUTH
Station distance: 7.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 46.80°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 21 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 DULUTH is what differs

Hermantown→Proctor→Arnold→Adolph→Bartlett→Eldes Corner→

Or put two places side by side: Duluth Heights vs Hermantown

Best time to visitDuluth Heights.