Decatur Weather History

Illinois, United States of America

Weather on a past date in Decatur

Any date from 1 January 2009 to yesterday.

Wed 21 Oct, 2026 Weather in Decatur

Sunrise: 07:12 AM
Sunset: 06:08 PM		Moonrise: 03:59 PM
Moonset: 02:33 AM		Max:
23.3 °c		Min:
8.8 °c		Avg:
15.4 °c		Precip:
0.00 mm		Max Wind:
6.5 kph
 
Wed 21
0:00 am
Wed 21
3:00 am
Wed 21
6:00 am
Wed 21
9:00 am
Wed 21
12:00 pm
Wed 21
3:00 pm
Wed 21
6:00 pm
Wed 21
9:00 pm
IconClearClearClearSunnySunnySunnyPartly cloudyClear
Temp11.7°c10.1°c9.1°c13.1°c21.7°c23.3°c19.1°c16.4°c
Wind6.5 kmph4.3 kmph3.6 kmph3.2 kmph2.5 kmph4.3 kmph4.3 kmph6.1 kmph
Precip0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm
Cloud1%0%0%0%0%3%59%5%
Humidity44%46%50%41%26%22%30%36%
Pressure1025 mb1025 mb1025 mb1026 mb1024 mb1022 mb1022 mb1023 mb

Decatur Annual Weather Averages

MonthHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
January1°C / 34°F-6°C / 21°F-3°C / 27°F132 hours63.31 mm / 2.49 In7 days1021 mb / 31 In
February4°C / 39°F-4°C / 24°F-0°C / 31°F132 hours70.46 mm / 2.77 In7 days1020 mb / 31 In
March11°C / 52°F2°C / 36°F7°C / 44°F156 hours117.35 mm / 4.62 In8 days1018 mb / 31 In
April17°C / 62°F7°C / 45°F12°C / 54°F161 hours164.15 mm / 6.46 In8 days1014 mb / 30 In
May22°C / 72°F13°C / 56°F18°C / 64°F183 hours138.54 mm / 5.45 In10 days1015 mb / 30 In
June27°C / 81°F18°C / 64°F23°C / 73°F226 hours139.19 mm / 5.48 In9 days1013 mb / 30 In
July28°C / 83°F19°C / 67°F24°C / 75°F226 hours129.66 mm / 5.10 In9 days1015 mb / 30 In
August28°C / 82°F18°C / 65°F23°C / 73°F234 hours104.61 mm / 4.12 In8 days1015 mb / 30 In
September26°C / 79°F15°C / 59°F20°C / 68°F232 hours99.29 mm / 3.91 In5 days1017 mb / 31 In
October19°C / 65°F9°C / 48°F14°C / 56°F207 hours95.48 mm / 3.76 In7 days1017 mb / 31 In
November11°C / 51°F2°C / 36°F6°C / 43°F191 hours89.27 mm / 3.51 In5 days1020 mb / 31 In
December5°C / 40°F-2°C / 29°F1°C / 34°F145 hours74.83 mm / 2.95 In7 days1020 mb / 31 In

Need more than one day of Decatur history?

Download historical weather for Decatur, or any other location, in CSV from January 2009 onwards. Ideal for research, insurance, energy, agriculture and machine-learning projects.

  • Historical weatherDaily and hourly interval data.
  • Yearly monthly averagesMonthly averages for every year since 2009.
  • Monthly climate averagesLong-term climate normals by month.
  • CSV formatReady for Excel, Python, R or your database.
Buy historical weather data Or use the History API

Weather history near Decatur

Region

Illinois

See the Decatur 14-day forecast »

Hotels near Decatur

Decatur weather history: common questions

How far back does Decatur weather history go?

Hourly historical weather is available from 1 January 2009. Choose a date above, or pick a month at the top of the page for long-term averages.

Can I download Decatur historical weather as a file?

Yes. Buy historical weather data as daily or hourly CSV, yearly monthly averages or monthly climate averages. A free sample download is available.

Is there an API for historical weather?

Yes. The WeatherAPI.com History API returns hourly weather for any past date from 2010, as JSON or XML. Get a free API key.

Quick and Easy Signup for Weather API

WeatherAPI.com makes it super easy to integrate our realtime, daily, hourly and 15 min interval weather forecast data, historical weather, marine weather, bulk request, air quality data, pollen, evapotranspiration, autocomplete, time zone, astronomy and sports data into your new or existing project.
Get Started