United States · 1991–2020

Best time to visit
Mattoon.

August leads for comfortable weather in Mattoon: typically 24.6°C by day, 12.1°C at night, with 85 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high24.6°C

Typical low12.1°C

Rain in August85 mm

Comfort

August

August · July · June

81climate match

Beach

July

July · August · June

52climate match

Outdoors

September

September · May · August

80climate match

The weakest month is January, scoring 5 against August’s 81 — days reach only -6.2°C, 30° 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

5-6.2° / -16.3°

Feb

5-2.9° / -14.5°

Mar

52.7° / -8.8°

Apr

2311.9° / -0.3°

May

5218.3° / 5.6°

Jun

7223.2° / 11°

Jul

7825.7° / 13.2°

Aug

8124.6° / 12.1°

Sep

6220.3° / 7.8°

Oct

2812.4° / 1.5°

Nov

53.8° / -4.8°

Dec

5-3.3° / -12.5°

Monthly climate evidence for Mattoon — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-6.2°C	-16.3°C	21 mm	5.6	9 h 07	5	Good coverage
February	-2.9°C	-14.5°C	20 mm	4.4	10 h 20	5	Good coverage
March	2.7°C	-8.8°C	32 mm	5.8	11 h 46	5	Good coverage
April	11.9°C	-0.3°C	64 mm	8.4	13 h 25	23	Good coverage
May	18.3°C	5.6°C	83 mm	9.2	14 h 49	52	Good coverage
June	23.2°C	11°C	114 mm	10.4	15 h 35	72	Good coverage
July	25.7°C	13.2°C	91 mm	8.7	15 h 17	78	Good coverage
August	24.6°C	12.1°C	85 mm	8	14 h 04	81	Good coverage
September	20.3°C	7.8°C	88 mm	8.6	12 h 28	62	Good coverage
October	12.4°C	1.5°C	75 mm	7.9	10 h 53	28	Good coverage
November	3.8°C	-4.8°C	42 mm	5.6	9 h 29	5	Good coverage
December	-3.3°C	-12.5°C	32 mm	6	8 h 47	5	Good coverage

Records at ANTIGO, 1894–2010
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.7°C1 Jan 1899	-39.4°C18 Jan 1967	31 mm5 Jan 1939	79 mm1937 · driest 1 mm in 1981	109
February	15.0°C27 Feb 1896	-40.0°C10 Feb 1899	31 mm15 Feb 1918	64 mm1971 · driest 1 mm in 1958	110
March	25.6°C29 Mar 1910	-30.6°C1 Mar 1962	58 mm7 Mar 1973	122 mm1977 · driest 1 mm in 1918	113
April	32.2°C28 Apr 1952	-18.9°C1 Apr 1924	73 mm18 Apr 1976	131 mm1976 · driest 0 mm in 1908	113
May	37.8°C31 May 1934	-8.3°C1 May 1903	74 mm22 May 1945	219 mm1904 · driest 10 mm in 1917	111
June	37.2°C1 Jun 1934	-4.4°C1 Jun 1896	97 mm14 Jun 1930	243 mm1919 · driest 9 mm in 1910	111
July	38.3°C11 Jul 1936	-1.1°C4 Jul 1972	110 mm25 Jul 1974	264 mm1978 · driest 12 mm in 1998	113
August	37.2°C4 Aug 1947	-1.1°C30 Aug 1915	131 mm22 Aug 1959	305 mm1941 · driest 1 mm in 1905	109
September	34.4°C8 Sep 1976	-10.6°C30 Sep 1899	102 mm19 Sep 1907	226 mm1959 · driest 6 mm in 1905	111
October	30.6°C2 Oct 1976	-15.6°C30 Oct 1895	110 mm5 Oct 2005	167 mm1911 · driest 3 mm in 1952	110
November	22.8°C1 Nov 1944	-25.6°C30 Nov 1976	52 mm11 Nov 1915	141 mm1991 · driest 0 mm in 1997	111
December	15.6°C21 Dec 1895	-37.2°C19 Dec 1983	48 mm23 Dec 2003	75 mm1968 · driest 0 mm in 1913	107

Typical days per month at ANTIGO, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	7
February	0	0	27	<1	5
March	0	0	26	<1	4
April	<1	0	17	2	1
May	5	<1	4	3	<1
June	12	2	<1	3	0
July	18	4	0	3	0
August	15	3	0	3	0
September	7	<1	2	3	0
October	<1	0	14	2	<1
November	0	0	24	1	3
December	0	0	29	<1	7

How often, not how much — every day in ANTIGO’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%	17%	2%	12%	-8.6–-1.6°C
February	0%	16%	2%	10%	-6.5–-0.3°C
March	<1%	19%	4%	17%	-0.5–6.4°C
April	10%	27%	7%	31%	8.8–15.2°C
May	35%	30%	10%	35%	16.0–22.2°C
June	58%	33%	13%	40%	21.7–26.4°C
July	71%	28%	10%	30%	24.5–28.8°C
August	69%	26%	11%	27%	23.1–27.1°C
September	42%	29%	11%	33%	18.3–22.8°C
October	15%	23%	7%	23%	11.0–16.9°C
November	<1%	21%	5%	19%	1.0–7.4°C
December	0%	18%	2%	14%	-6.2–0.0°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.

1905Each stripe is one year’s mean temperature against the 94-year average. Warmest: 1931. Coolest: 1989.2009

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5262074
NOAA station: USC00470239 · ANTIGO
Station distance: 18.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 17 usable years
Daylight: Calculated from latitude 45.00°, 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 ANTIGO is what differs

Antigo→White Lake→Aniwa→Summit Lake→Bavaria→Bryant→

Or put two places side by side: Mattoon vs Antigo

Best time to visitMattoon.