Grand Island receives its highest rainfall in May, while humidity peaks during winter months.
🌧️ Wettest:May — 114 mm☀️ Driest:Jan — 15 mm
💧 Humidity peaks at 76% in Dec · annual avg 67%
🌍 Climate Summary
Avg Annual Temp:53.4°F
Avg Annual Rainfall:694 mm
Avg Humidity:67%
Data Period:1981 – 2025
Grand Island Climate Overview
Grand Island has a temperate climate with warm summers and freezing winters.
Temperatures peak in Jul and drop to their lowest in Jan,
while rainfall is highest during spring and early summer months.
Humidity remains moderate throughout the year, especially during winter months, creating cold and damp conditions.
📈 Yearly Trends
The warmest year in Grand Island's recorded history was 2012
(avg: 58.3°F),
while the coldest year was 1993
(avg: 49.3°F),
based on annual average temperatures.
📊 Key Climate Trends
🌡️ Grand Island's temperature has remained relatively stable over the past decade
📊 Minimum temperatures have remained largely stable across the dataset
🌧️ Rainfall has decreased in recent years compared to earlier periods
🌡️ Annual Temperature Trend
View Range:
Average annual high/low · Last 10 years · °F
Grand Island's temperatures has remained relatively stable over the past decade.
The highest recorded temperature reached
111.6°F in Jun 2012,
while the lowest dropped to
-28.8°F in Jan 2024.
🌧️ Annual Precipitation
View Range:
Total annual precipitation · Last 10 years · mm/year
Annual rainfall in Grand Island shows noticeable variation. Rainfall has decreased in recent years compared to earlier periods.
Based on 45 years of data (1981–2025), Jul is typically the hottest month in Grand Island, Nebraska, with average high temperatures around 100.7°F.
What is the coldest month in Grand Island?▼
Jan is the coldest month in Grand Island, with average low temperatures around -1.6°F.
What is the rainiest month in Grand Island?▼
May receives the most rainfall with approximately 114 mm, while Jan is the driest with 15 mm.
What was the highest temperature ever recorded in Grand Island?▼
The highest recorded temperature was 111.6°F in Jun 2012. This is part of the historical record spanning 1981–2025.
What was the lowest temperature ever recorded in Grand Island?▼
The lowest recorded temperature was -28.8°F in Jan 2024.
How many years of data does this page cover?▼
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
How much sunlight does Grand Island get?▼
Grand Island receives the most sunlight in Jun with an average solar radiation of 6.88 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability in Nebraska.
Where does this weather data come from?▼
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.