United States · 1991–2020

Best time to visit
Palermo.

August leads for comfortable weather in Palermo: typically 26.8°C by day, 11.1°C at night, with 57 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high26.8°C

Typical low11.1°C

Rain in August57 mm

Comfort

August

August · July · September

77climate match

Beach

August

August · July · September

57climate match

Outdoors

September

September · May · June

83climate match

The weakest month is January, scoring 5 against August’s 77 — days reach only -8.2°C, 32° 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

5-8.2° / -18.1°

Feb

5-5.2° / -15.8°

Mar

51.4° / -9.9°

Apr

2111° / -2.9°

May

4817.8° / 3.5°

Jun

6722.5° / 9.5°

Jul

7426.3° / 12.2°

Aug

7726.8° / 11.1°

Sep

6921.1° / 5.7°

Oct

2811.9° / -1°

Nov

51.8° / -8.5°

Dec

5-5.8° / -15.2°

Monthly climate evidence for Palermo — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-8.2°C	-18.1°C	15 mm	5.3	8 h 44	5	Strong coverage
February	-5.2°C	-15.8°C	13 mm	3.9	10 h 07	5	Strong coverage
March	1.4°C	-9.9°C	19 mm	5.2	11 h 44	5	Strong coverage
April	11°C	-2.9°C	34 mm	6.8	13 h 35	21	Strong coverage
May	17.8°C	3.5°C	75 mm	9.5	15 h 11	48	Strong coverage
June	22.5°C	9.5°C	104 mm	12.6	16 h 04	67	Strong coverage
July	26.3°C	12.2°C	88 mm	9.3	15 h 43	74	Strong coverage
August	26.8°C	11.1°C	57 mm	7.7	14 h 20	77	Strong coverage
September	21.1°C	5.7°C	42 mm	7	12 h 31	69	Strong coverage
October	11.9°C	-1°C	36 mm	6.6	10 h 44	28	Strong coverage
November	1.8°C	-8.5°C	20 mm	4.7	9 h 08	5	Strong coverage
December	-5.8°C	-15.2°C	17 mm	5.2	8 h 21	5	Strong coverage

Records at STANLEY 3 NNW, 1938–2017
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	13.3°C5 Jan 2012	-40.6°C19 Jan 1996	12 mm7 Jan 1989	31 mm1982 · driest 0 mm in 1946	79
February	15.6°C28 Feb 1992	-41.1°C2 Feb 1996	22 mm28 Feb 1951	53 mm1998 · driest 1 mm in 2005	78
March	24.4°C19 Mar 2012	-35.6°C2 Mar 2014	20 mm27 Mar 1956	53 mm1975 · driest 0 mm in 1948	78
April	32.2°C28 Apr 1952	-26.1°C2 Apr 1975	44 mm7 Apr 1948	131 mm1975 · driest 0 mm in 1949	78
May	35.0°C30 May 1988	-11.1°C9 May 1945	53 mm12 May 1985	177 mm2011 · driest 4 mm in 1958	77
June	38.9°C24 Jun 1988	-1.1°C3 Jun 1946	83 mm18 Jun 1956	255 mm1953 · driest 18 mm in 1961	76
July	40.6°C28 Jul 1988	1.1°C13 Jul 1967	69 mm25 Jul 1941	271 mm1993 · driest 13 mm in 1944	77
August	43.3°C7 Aug 1949	-1.1°C19 Aug 1950	47 mm21 Aug 1974	156 mm1972 · driest 1 mm in 1971	77
September	37.8°C7 Sep 1976	-12.2°C26 Sep 1942	80 mm22 Sep 1959	165 mm1959 · driest 0 mm in 1948	77
October	33.3°C1 Oct 1953	-19.4°C28 Oct 1939	56 mm4 Oct 2016	100 mm1982 · driest 0 mm in 1965	76
November	23.3°C8 Nov 1999	-34.4°C29 Nov 1964	21 mm1 Nov 1938	48 mm2005 · driest 0 mm in 1961	75
December	17.8°C3 Dec 1941	-43.9°C23 Dec 1983	23 mm26 Dec 2016	47 mm2016 · driest 0 mm in 1943	75

Typical days per month at STANLEY 3 NNW, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	31	0	8
February	0	0	28	<1	7
March	0	0	30	<1	6
April	<1	<1	22	<1	3
May	4	<1	9	2	<1
June	11	2	<1	3	0
July	20	7	0	2	0
August	21	9	0	2	0
September	9	3	3	1	<1
October	1	<1	19	<1	2
November	0	0	28	<1	5
December	0	0	31	<1	8

How often, not how much — every day in STANLEY 3 NNW’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%	14%	<1%	8%	-14.4–-2.3°C
February	0%	13%	<1%	7%	-10.4–0.2°C
March	<1%	15%	<1%	10%	-4.5–6.3°C
April	12%	21%	3%	21%	7.1–14.5°C
May	36%	27%	7%	31%	15.4–20.9°C
June	52%	36%	11%	48%	20.3–25.1°C
July	71%	26%	7%	26%	24.7–29.4°C
August	73%	23%	5%	21%	24.0–29.6°C
September	48%	21%	4%	22%	17.3–23.7°C
October	18%	16%	2%	12%	9.6–15.9°C
November	<1%	13%	<1%	8%	-2.2–7.0°C
December	0%	14%	<1%	10%	-10.5–-0.7°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.

1938Each stripe is one year’s mean temperature against the 72-year average. Warmest: 2016. Coolest: 1950.2016

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5690942
NOAA station: USC00328276 · STANLEY 3 NNW
Station distance: 13.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude 48.34°, mid-month, sunrise to sunset including refraction. Not a station measurement.
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 STANLEY 3 NNW is what differs

Stanley→Parshall→Plaza→Ross→Belden→Blaisdell→

Or put two places side by side: Palermo vs Stanley

Best time to visitPalermo.

August

August

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Palermo.

The whole year,
without the guesswork.

Nearby, measured,
and named.