United States · 1991–2020

Best time to visit
Geneva.

September leads for comfortable weather in Geneva: typically 26.1°C by day, 13°C at night, with 68 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.1°C

Typical low13°C

Rain in September68 mm

Comfort

September

September · May · August

83climate match

Beach

July

July · August · June

76climate match

Outdoors

October

October · April · September

85climate match

The weakest month is January, scoring 5 against September’s 83 — days reach only 2.5°C, 21° 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

52.5° / -8.5°

Feb

55.2° / -6.5°

Mar

3012.2° / -1.3°

Apr

5618.4° / 4.4°

May

7223.4° / 10.9°

Jun

6628.7° / 16.6°

Jul

6130.4° / 18.8°

Aug

6729.2° / 17.7°

Sep

8326.1° / 13°

Oct

6319.2° / 5.9°

Nov

2810.9° / -1.2°

Dec

54° / -6.4°

Monthly climate evidence for Geneva — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.5°C	-8.5°C	15 mm	2.8	9 h 34	5	Strong coverage
February	5.2°C	-6.5°C	13 mm	2.5	10 h 35	5	Strong coverage
March	12.2°C	-1.3°C	35 mm	4.9	11 h 49	30	Strong coverage
April	18.4°C	4.4°C	59 mm	6.4	13 h 13	56	Strong coverage
May	23.4°C	10.9°C	125 mm	9.5	14 h 24	72	Strong coverage
June	28.7°C	16.6°C	113 mm	7.7	15 h 03	66	Strong coverage
July	30.4°C	18.8°C	91 mm	6.6	14 h 48	61	Strong coverage
August	29.2°C	17.7°C	93 mm	6.5	13 h 47	67	Strong coverage
September	26.1°C	13°C	68 mm	5.1	12 h 25	83	Strong coverage
October	19.2°C	5.9°C	55 mm	4.8	11 h 03	63	Strong coverage
November	10.9°C	-1.2°C	31 mm	3.1	9 h 52	28	Strong coverage
December	4°C	-6.4°C	23 mm	2.7	9 h 17	5	Strong coverage

What has changed

Geneva runs +0.9°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

+1.6

Feb

-0.1

Mar

+2.6

Apr

+0.5

May

+0.3

Jun

+1.1

Jul

-1.0

Aug

-0.8

Sep

+2.2

Oct

+0.5

Nov

+1.8

Dec

+2.0

September daytime highs, 2011–2023. Last recorded: 29.6°C.

Records at GENEVA, 1893–2023
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	24.4°C10 Jan 1990	-33.3°C12 Jan 1912	32 mm3 Jan 1971	76 mm1932 · driest 0 mm in 1981	129
February	27.2°C29 Feb 1972	-35.6°C12 Feb 1899	51 mm14 Feb 1909	84 mm1951 · driest 0 mm in 2006	129
March	33.3°C28 Mar 1895	-27.2°C4 Mar 1960	107 mm23 Mar 1987	225 mm1987 · driest 0 mm in 1994	129
April	36.7°C20 Apr 1902	-12.8°C3 Apr 1936	102 mm27 Apr 1986	192 mm1986 · driest 1 mm in 1989	130
May	38.9°C30 May 1934	-6.7°C1 May 1909	116 mm22 May 1965	350 mm1903 · driest 5 mm in 2023	128
June	42.8°C15 Jun 1946	2.2°C7 Jun 1935	159 mm4 Jun 1898	295 mm1898 · driest 7 mm in 2016	129
July	47.8°C15 Jul 1934	5.0°C9 Jul 1895	113 mm17 Jul 1976	292 mm1993 · driest 2 mm in 1983	131
August	45.0°C13 Aug 1936	3.3°C24 Aug 1928	150 mm6 Aug 1954	244 mm1944 · driest 5 mm in 1913	131
September	42.2°C6 Sep 1913	-5.0°C28 Sep 1899	146 mm29 Sep 1983	265 mm1973 · driest 3 mm in 1939	131
October	36.7°C5 Oct 1947	-15.0°C30 Oct 1925	172 mm11 Oct 1928	241 mm1928 · driest 0 mm in 1895	129
November	29.4°C9 Nov 2006	-21.1°C28 Nov 1976	103 mm15 Nov 1996	132 mm1996 · driest 0 mm in 1976	126
December	26.7°C6 Dec 1939	-32.2°C22 Dec 1989	48 mm1 Dec 2018	109 mm1913 · driest 0 mm in 2010	128

Typical days per month at GENEVA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	29	<1	3
February	<1	0	24	<1	3
March	2	<1	19	1	1
April	5	1	7	2	<1
May	13	4	<1	4	0
June	25	13	0	3	0
July	29	18	0	3	0
August	27	15	0	3	0
September	19	8	<1	2	0
October	6	1	4	2	<1
November	<1	0	18	<1	<1
December	0	0	29	<1	2

How often, not how much — every day in GENEVA’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%	10%	1%	4%	-2.7–6.6°C
February	2%	12%	3%	7%	-0.5–9.0°C
March	15%	16%	4%	11%	5.6–14.9°C
April	36%	22%	7%	21%	15.3–21.0°C
May	58%	27%	12%	30%	20.9–26.3°C
June	72%	26%	12%	28%	26.2–31.5°C
July	79%	21%	9%	16%	29.3–35.0°C
August	78%	21%	10%	18%	28.3–33.4°C
September	73%	19%	9%	15%	23.6–29.2°C
October	49%	14%	5%	11%	16.8–22.7°C
November	9%	10%	3%	5%	7.0–14.1°C
December	<1%	10%	2%	4%	-0.1–7.5°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.

1896Each stripe is one year’s mean temperature against the 119-year average. Warmest: 2012. Coolest: 1951.2021

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5068953
NOAA station: USC00253175 · GENEVA
Station distance: 1.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 40.53°, 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 GENEVA is what differs

Shickley→Milligan→Ohiowa→Tobias→Strang→Burress→

Or put two places side by side: Geneva vs Shickley

Best time to visitGeneva.