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Forecast confidence: Low · models disagree by 8°F

Grand Island weather

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Showers,rain likely tomorrow

NWS, the American and the European model put Grand Island's high today between 89° and 97°, a 8° split. Tomorrow looks heavy drizzle around 75°, with a 53% chance of rain.

92°70°
75°67°
68°60°
67°58°
68°56°
68°54°
Todaysplit ±8°Tomorrowsplit ±5°Sundaysplit ±6°Mondaysplit ±14°Tuesdaysplit ±15°Wednesdaysplit ±12°
NWSNational Blend (NBM)
89°
Showers
Today 89°·Low 70°·Rain 22%
AmericanNOAA GFS
97°
Cloudy
Today 97°·Low 70°·Rain 22%
EuropeanECMWF
90°
Light drizzle
Today 90°·Low 71°·Rain 84%
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Grand Island weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Grand Island weather in numbers

from 30 years of measured normals

Grand Island swings 69°F across the year, from 85°F highs in August to 16°F lows in January, and May is usually the wettest month in a year that brings about 27 in of precipitation.

Warmest month
August
85°F average high
Coldest month
January
16°F average low
Wettest month
May
27 in a year
Below freezing
4 months
January, February, March and December
Comfortable
2 months
April and October
Residents
51,000
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The weather map: all three models at once

NWS, American, European side by side around Grand Island and nearby towns.Live rain radar →
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Grand Island hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Grand Island 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Showers
92° 70°
±8°
Tomorrow
Heavy drizzle
75° 67°
±5°
Sun
Light drizzle
68° 60°
±6°
Mon
Light drizzle
67° 58°
±14°
Tue
Cloudy
68° 56°
±15°
Wed
Cloudy
68° 54°
±12°
Thu
Drizzle
66° 57°
±9°
Fri
Light drizzle
66° 59°
±10°
Sat
Light drizzle
70° 58°
±17°
Sun
Drizzle
71° 59°
±9°
Mon
Light drizzle
66° 55°
±5°
Tue
Partly cloudy
70° 49°
models agree
Wed
Cloudy
72° 51°
±7°
Thu
Cloudy
79° 58°
models agree

Grand Island, Nebraska (NE) is at its warmest in Aug (average highs near 85°F) and coldest in Jan (lows around 16°F), with roughly 27 in of precipitation across the year. Below, compare what NWS, American, European forecast for Grand Island right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Grand Island climate by month

average daytime high and overnight low across a typical year
Jan
30°
16°
Feb
47°
24°
Mar
51°
29°
Apr
64°
41°
May
75°
54°
Jun
83°
64°
Jul
84°
65°
Aug
85°
66°
Sep
82°
61°
Oct
67°
47°
Nov
52°
34°
Dec
41°
25°

Which forecast is most accurate in Grand Island?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
86
/100rank #1
93±0.7°F94±1.7 mph7184% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
65
/100rank #2
80±2.0°F91±3.0 mph2961% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±8°89° to 97°±62%22% to 84% chance
Tomorrow±5°72° to 77°±17%36% to 53% chance
Sun±6°65° to 71°±40%21% to 61% chance
Mon±14°61° to 75°±7%26% to 33% chance
Tue±15°60° to 75°models agree3% to 3% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Grand Island

today, local time
Sunrise
07:17
Sunset
19:37
Daylight
12h 20m

Common questions

What's the weather in Grand Island today?
On this page we show what NWS, American, European each forecast for Grand Island today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Grand Island today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Grand Island and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Grand Island?
Over the last 30 days, the European model has been the most accurate for Grand Island (CheckWeather Score 86/100), ahead of the American at 65. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Grand Island?
August is typically the warmest month in Grand Island, with average highs around 85°F.
How cold does Grand Island get?
The coldest month in Grand Island is January, when overnight lows average about 16°F.
How much rain does Grand Island get?
Grand Island sees roughly 27 in of precipitation a year, with May usually the wettest month.

Nearby

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