United States · 1991–2020

Best time to visit
Rossville.

September leads for comfortable weather in Rossville: typically 25.9°C by day, 12.9°C at night, with 85 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.9°C

Typical low12.9°C

Rain in September85 mm

Comfort

September

September · May · August

80climate match

Beach

August

August · July · June

72climate match

Outdoors

October

October · April · May

76climate match

The weakest month is January, scoring 5 against September’s 80 — days reach only 0.9°C, 23° 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

50.9° / -7.5°

Feb

53.5° / -5.7°

Mar

1810.3° / -0.5°

Apr

4617.7° / 5.1°

May

7323.5° / 11.4°

Jun

6528.2° / 16.5°

Jul

6129.3° / 18.1°

Aug

6928.6° / 16.9°

Sep

8025.9° / 12.9°

Oct

5718.7° / 6.9°

Nov

1910.2° / 0.7°

Dec

53.4° / -4.5°

Monthly climate evidence for Rossville — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	0.9°C	-7.5°C	53 mm	7.3	9 h 35	5	Strong coverage
February	3.5°C	-5.7°C	51 mm	6.7	10 h 36	5	Strong coverage
March	10.3°C	-0.5°C	68 mm	7.1	11 h 49	18	Strong coverage
April	17.7°C	5.1°C	101 mm	9.7	13 h 13	46	Strong coverage
May	23.5°C	11.4°C	121 mm	10.1	14 h 24	73	Strong coverage
June	28.2°C	16.5°C	124 mm	9.2	15 h 02	65	Strong coverage
July	29.3°C	18.1°C	115 mm	8	14 h 47	61	Strong coverage
August	28.6°C	16.9°C	100 mm	7	13 h 46	69	Strong coverage
September	25.9°C	12.9°C	85 mm	6.5	12 h 25	80	Strong coverage
October	18.7°C	6.9°C	87 mm	7.4	11 h 03	57	Strong coverage
November	10.2°C	0.7°C	74 mm	7.7	9 h 53	19	Strong coverage
December	3.4°C	-4.5°C	55 mm	6.8	9 h 18	5	Strong coverage

What has changed

Rossville runs +0.8°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

+1.3

Feb

+1.1

Mar

+1.4

Apr

+0.6

May

+0.7

Jun

+0.4

Jul

-0.3

Aug

+0.1

Sep

+1.2

Oct

+0.9

Nov

+0.1

Dec

+2.4

September daytime highs, 2011–2025. Last recorded: 27.5°C.

Records at HOOPESTON, 1902–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.6°C25 Jan 1950	-31.1°C20 Jan 1985	57 mm11 Jan 2020	180 mm1950 · driest 2 mm in 1986	121
February	22.8°C26 Feb 2024	-31.7°C13 Feb 1905	58 mm21 Feb 2018	175 mm1909 · driest 1 mm in 2026	123
March	30.0°C26 Mar 2026	-23.3°C8 Mar 1943	100 mm11 Mar 1990	177 mm1913 · driest 10 mm in 1981	123
April	33.9°C11 Apr 1930	-15.6°C2 Apr 2018	136 mm12 Apr 1994	262 mm1994 · driest 24 mm in 1971	123
May	38.3°C31 May 1934	-3.9°C10 May 1966	131 mm29 May 2006	256 mm2006 · driest 6 mm in 1925	122
June	41.7°C1 Jun 1934	1.1°C4 Jun 1945	128 mm28 Jun 1902	365 mm1902 · driest 4 mm in 1988	124
July	43.9°C14 Jul 1936	6.1°C15 Jul 1930	90 mm18 Jul 1939	240 mm1962 · driest 15 mm in 2026	125
August	41.1°C5 Aug 1918	2.2°C31 Aug 1915	159 mm18 Aug 2002	302 mm1977 · driest 17 mm in 2019	123
September	39.4°C14 Sep 1939	-3.9°C26 Sep 1928	103 mm5 Sep 2015	307 mm1926 · driest 0 mm in 1979	122
October	34.4°C8 Oct 1939	-12.8°C30 Oct 1925	77 mm22 Oct 1983	234 mm1941 · driest 8 mm in 1964	122
November	27.2°C1 Nov 1950	-23.3°C25 Nov 1950	68 mm2 Nov 1936	209 mm1985 · driest 2 mm in 1904	122
December	22.2°C3 Dec 2012	-30.0°C28 Dec 1924	59 mm21 Dec 1967	178 mm1967 · driest 5 mm in 1930	123

Typical days per month at HOOPESTON, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	1	4
February	0	0	23	1	4
March	<1	0	18	2	2
April	4	<1	6	4	<1
May	14	4	<1	4	0
June	25	11	0	4	0
July	28	14	0	4	0
August	27	11	0	3	0
September	18	6	<1	3	0
October	5	<1	3	3	0
November	<1	0	15	3	1
December	0	0	25	2	3

The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 85); on 2011–2025 it is May (83). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in HOOPESTON’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%	22%	5%	22%	-2.6–4.8°C
February	<1%	23%	5%	22%	-1.0–7.0°C
March	8%	27%	8%	31%	6.1–13.7°C
April	25%	32%	11%	40%	14.6–20.1°C
May	53%	31%	12%	40%	20.4–26.2°C
June	70%	28%	12%	33%	26.1–30.6°C
July	75%	25%	11%	25%	28.0–32.6°C
August	77%	23%	9%	21%	27.1–31.2°C
September	69%	23%	9%	22%	23.7–28.1°C
October	38%	23%	8%	25%	16.4–21.8°C
November	7%	25%	8%	25%	6.7–13.1°C
December	<1%	23%	6%	21%	-0.8–6.5°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.

1903Each stripe is one year’s mean temperature against the 115-year average. Warmest: 1998. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4908209
NOAA station: USC00114198 · HOOPESTON
Station distance: 9.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 40.38°, 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 HOOPESTON is what differs

Hoopeston→Cissna Park→Potomac→Alvin→Henning→Wellington→

Or put two places side by side: Rossville vs Hoopeston

Best time to visitRossville.