Explore historical climate data for cities across all US states. Monthly temperature, precipitation, humidity, wind, and solar radiation from 1981–2025 based on NASA POWER satellite data.
56
States
1,286
Cities
45
Years of Data
1981–2025
Coverage
Temperature:
United States Climate Overview
The United States spans diverse climate zones — from the tropical heat of Arizona
(avg Jul high: 111.9°F)
to the arctic cold of North Dakota
(avg Jan low: -23.4°F).
The wettest state is American Samoa
(~1982 mm/yr) while
Arizona
is the driest (~277 mm/yr).
This directory covers 45 years (1981–2025) of NASA POWER data for
1286 cities across 56 states,
including temperature, rainfall, humidity, wind speed, and solar radiation.
TownPillar has historical weather data for 1286 cities across 56 US states, covering 45 years of NASA POWER climate records from 1981 to 2025. Each city includes monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
Where does this climate data come from?▼
All data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis data. It provides monthly temperature, precipitation, humidity, wind speed, and solar radiation at 0.5° × 0.625° spatial resolution from 1981 to 2025.
What is the best time to visit the United States?▼
The best time to visit the US depends on your destination and activities. Generally, spring (April–June) and fall (September–October) offer mild weather across most of the country. The South and Southwest are ideal in winter, while the Pacific Northwest and New England are best in summer. Use this site to compare specific city weather data for your travel dates.
📚 About the Data
All weather history data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), which uses MERRA-2 satellite reanalysis to provide global climate records. Data covers 45 years (1981–2025) at monthly resolution for 1286 US cities across 56 states, including temperature highs/lows, precipitation, relative humidity, wind speed, and solar radiation.