United States · 1991–2020

Best time to visit
Harrison.

September leads for comfortable weather in Harrison: typically 25.8°C by day, 10.7°C at night, with 66 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.8°C

Typical low10.7°C

Rain in September66 mm

Comfort

September

September · June · May

80climate match

Beach

August

August · July · June

73climate match

Outdoors

October

October · May · September

80climate match

The weakest month is January, scoring 5 against September’s 80 — days reach only -0.8°C, 25° below the 24°C the score treats as ideal, and nights drop to -12.3°C.

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° / -12.3°

Feb

53.6° / -8.7°

Mar

169.5° / -4.2°

Apr

4316.4° / 2.1°

May

7222.8° / 8.7°

Jun

7427.5° / 14.2°

Jul

6430.9° / 17.1°

Aug

6930.3° / 16.1°

Sep

8025.8° / 10.7°

Oct

5718.2° / 3.6°

Nov

107.4° / -4.3°

Dec

52° / -9°

Monthly climate evidence for Harrison — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-0.8°C	-12.3°C	14 mm	2.6	9 h 17	5	Good coverage
February	3.6°C	-8.7°C	21 mm	3.3	10 h 26	5	Good coverage
March	9.5°C	-4.2°C	31 mm	4.4	11 h 47	16	Good coverage
April	16.4°C	2.1°C	74 mm	7.1	13 h 21	43	Good coverage
May	22.8°C	8.7°C	97 mm	7.6	14 h 40	72	Good coverage
June	27.5°C	14.2°C	95 mm	8.3	15 h 23	74	Good coverage
July	30.9°C	17.1°C	78 mm	6.4	15 h 06	64	Good coverage
August	30.3°C	16.1°C	74 mm	6	13 h 58	69	Good coverage
September	25.8°C	10.7°C	66 mm	5	12 h 27	80	Good coverage
October	18.2°C	3.6°C	47 mm	4.6	10 h 56	57	Good coverage
November	7.4°C	-4.3°C	25 mm	3.2	9 h 37	10	Good coverage
December	2°C	-9°C	14 mm	2.2	8 h 58	5	Good coverage

Records at ARMOUR, 1896–2008
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C24 Jan 1981	-42.8°C12 Jan 1912	46 mm19 Jan 1988	57 mm1952 · driest 0 mm in 1919	111
February	23.9°C21 Feb 2000	-42.8°C2 Feb 1905	35 mm20 Feb 1969	93 mm1969 · driest 0 mm in 1970	106
March	34.4°C30 Mar 1943	-29.4°C2 Mar 1913	84 mm17 Mar 1987	183 mm1987 · driest 2 mm in 1925	105
April	36.7°C25 Apr 1962	-18.9°C3 Apr 1936	59 mm18 Apr 1995	190 mm1896 · driest 0 mm in 2008	109
May	40.6°C30 May 1934	-8.3°C1 May 1908	65 mm18 May 1897	199 mm1995 · driest 5 mm in 1940	111
June	43.3°C23 Jun 1937	-1.1°C20 Jun 1902	116 mm10 Jun 1986	250 mm1984 · driest 18 mm in 1913	108
July	46.7°C24 Jul 1940	3.9°C30 Jul 1971	86 mm21 Jul 1978	234 mm1900 · driest 3 mm in 2007	111
August	44.4°C2 Aug 1930	1.7°C20 Aug 1950	139 mm18 Aug 1937	208 mm1953 · driest 3 mm in 1983	111
September	42.8°C9 Sep 1904	-8.3°C29 Sep 1899	113 mm20 Sep 1950	182 mm1901 · driest 0 mm in 1898	112
October	37.2°C3 Oct 1905	-20.0°C29 Oct 1925	104 mm5 Oct 1911	147 mm1911 · driest 0 mm in 2006	109
November	28.3°C15 Nov 1953	-27.8°C14 Nov 1959	49 mm1 Nov 2000	96 mm2000 · driest 0 mm in 1939	106
December	22.2°C6 Dec 1939	-39.4°C29 Dec 1917	76 mm2 Dec 2005	76 mm2005 · driest 0 mm in 2004	108

Typical days per month at ARMOUR, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	4
February	0	0	25	<1	3
March	<1	0	23	1	3
April	4	<1	10	3	1
May	12	3	1	3	0
June	22	10	0	3	0
July	28	18	0	2	0
August	28	17	0	3	0
September	17	9	<1	2	0
October	5	1	8	2	<1
November	<1	0	24	<1	2
December	0	0	29	<1	3

How often, not how much — every day in ARMOUR’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	<1%	9%	1%	3%	-6.7–4.2°C
February	<1%	12%	2%	7%	-3.6–6.9°C
March	9%	16%	4%	13%	1.7–12.8°C
April	31%	22%	7%	23%	12.9–19.7°C
May	56%	26%	9%	29%	20.3–25.8°C
June	70%	29%	11%	33%	25.6–31.2°C
July	78%	22%	7%	20%	29.1–35.3°C
August	80%	20%	8%	15%	28.6–33.4°C
September	72%	17%	6%	15%	22.6–29.2°C
October	44%	14%	4%	9%	15.8–21.9°C
November	6%	11%	2%	6%	4.4–11.7°C
December	<1%	10%	2%	6%	-3.4–5.4°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.

1899Each stripe is one year’s mean temperature against the 88-year average. Warmest: 1939. Coolest: 1950.2003

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5228342
NOAA station: USC00390296 · ARMOUR
Station distance: 19.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 43.43°, 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 ARMOUR is what differs

Parkston→Armour→Corsica→Delmont→New Holland→Beardsley→

Or put two places side by side: Harrison vs Parkston

Best time to visitHarrison.