United States · 1991–2020

Best time to visit
Grand Island.

September leads for comfortable weather in Grand Island: typically 26°C by day, 11.7°C at night, with 51 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26°C

Typical low11.7°C

Rain in September51 mm

Comfort

September

September · May · June

83climate match

Beach

August

August · July · June

75climate match

Outdoors

October

October · September · April

81climate match

The weakest month is January, scoring 5 against September’s 83 — days reach only 2°C, 22° below the 24°C the score treats as ideal, and nights drop to -9.6°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

52° / -9.6°

Feb

54.4° / -7.6°

Mar

2511.2° / -2.2°

Apr

4917.1° / 3.3°

May

6922.7° / 9.8°

Jun

6928.8° / 15.7°

Jul

6030.9° / 18.4°

Aug

6829.6° / 17.1°

Sep

8326° / 11.7°

Oct

5918.4° / 4.3°

Nov

2310.3° / -2.6°

Dec

53.5° / -7.7°

Monthly climate evidence for Grand Island — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2°C	-9.6°C	15 mm	3.3	9 h 32	5	Strong coverage
February	4.4°C	-7.6°C	19 mm	3.6	10 h 34	5	Strong coverage
March	11.2°C	-2.2°C	35 mm	5.1	11 h 49	25	Strong coverage
April	17.1°C	3.3°C	64 mm	6.4	13 h 14	49	Strong coverage
May	22.7°C	9.8°C	119 mm	9.1	14 h 26	69	Strong coverage
June	28.8°C	15.7°C	102 mm	7.9	15 h 06	69	Strong coverage
July	30.9°C	18.4°C	89 mm	7	14 h 50	60	Strong coverage
August	29.6°C	17.1°C	81 mm	6.9	13 h 48	68	Strong coverage
September	26°C	11.7°C	51 mm	5.4	12 h 25	83	Strong coverage
October	18.4°C	4.3°C	51 mm	4.8	11 h 02	59	Strong coverage
November	10.3°C	-2.6°C	28 mm	3.6	9 h 50	23	Strong coverage
December	3.5°C	-7.7°C	21 mm	3.4	9 h 15	5	Strong coverage

What has changed

Grand Island runs +1.2°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

+2.0

Feb

+0.7

Mar

+2.9

Apr

+0.3

May

+0.3

Jun

+1.4

Jul

-0.5

Aug

-0.4

Sep

+2.5

Oct

+0.5

Nov

+2.1

Dec

+2.9

September daytime highs, 2011–2025. Last recorded: 27.3°C.

Records at GRAND IS CNTRL NE RGNL AP, 1938–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	24.4°C10 Jan 1990	-33.3°C27 Jan 1963	32 mm29 Jan 1947	42 mm1960 · driest 0 mm in 1961	88
February	26.7°C25 Feb 1995	-32.7°C16 Feb 2021	49 mm18 Feb 1971	86 mm1971 · driest 0 mm in 2022	88
March	36.7°C21 Mar 2026	-29.4°C4 Mar 1960	70 mm14 Mar 2021	220 mm2021 · driest 0 mm in 1967	88
April	35.6°C26 Apr 1989	-13.9°C3 Apr 1975	68 mm24 Apr 2007	186 mm1984 · driest 2 mm in 1989	89
May	38.9°C14 May 2013	-5.0°C2 May 1967	165 mm11 May 2005	230 mm2008 · driest 11 mm in 1964	89
June	42.2°C15 Jun 1946	2.2°C4 Jun 1943	163 mm25 Jun 2025	355 mm1967 · driest 1 mm in 2016	89
July	43.9°C24 Jul 1940	5.6°C30 Jul 1971	118 mm8 Jul 1950	264 mm1993 · driest 4 mm in 2012	89
August	43.3°C16 Aug 1983	4.4°C20 Aug 1950	105 mm30 Aug 1977	303 mm2019 · driest 12 mm in 2022	88
September	40.0°C6 Sep 1939	-5.0°C29 Sep 1984	143 mm1 Sep 1977	229 mm1965 · driest 0 mm in 1998	88
October	36.1°C11 Oct 2015	-12.8°C27 Oct 1997	78 mm2 Oct 2017	152 mm2008 · driest 0 mm in 1958	88
November	29.4°C3 Nov 2020	-23.9°C28 Nov 1976	66 mm16 Nov 1996	96 mm1983 · driest 0 mm in 2007	88
December	26.7°C6 Dec 1939	-32.2°C22 Dec 1989	38 mm1 Dec 2018	88 mm2018 · driest 1 mm in 1943	88

Typical days per month at GRAND IS CNTRL NE RGNL AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	5
February	<1	0	26	<1	4
March	2	<1	22	1	2
April	5	1	8	2	1
May	12	4	<1	4	<1
June	24	14	0	3	0
July	29	19	0	3	0
August	27	15	0	3	0
September	19	8	<1	2	0
October	6	1	6	2	<1
November	<1	0	22	1	2
December	0	0	30	<1	4

How often, not how much — every day in GRAND IS CNTRL NE RGNL AP’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%	5%	-2.7–6.0°C
February	3%	13%	2%	9%	-1.6–8.9°C
March	13%	17%	4%	14%	5.2–14.9°C
April	33%	21%	7%	22%	13.7–20.0°C
May	54%	29%	11%	35%	20.3–25.7°C
June	71%	27%	11%	30%	26.0–31.2°C
July	77%	23%	8%	21%	28.7–34.2°C
August	79%	21%	7%	18%	27.7–32.3°C
September	73%	18%	6%	17%	23.1–28.6°C
October	46%	14%	4%	9%	16.3–21.8°C
November	10%	11%	3%	6%	7.1–13.8°C
December	<1%	10%	2%	5%	-0.7–6.9°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.

1939Each stripe is one year’s mean temperature against the 87-year average. Warmest: 2012. Coolest: 1951.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5069297
NOAA station: USW00014935 · GRAND IS CNTRL NE RGNL AP
Station distance: 4.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 40.93°, 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 GRAND IS CNTRL NE RGNL AP is what differs

Cairo→Alda→Phillips→Chapman→Saint Libory→Abbott→

Or put two places side by side: Grand Island vs Cairo

Best time to visitGrand Island.