Streator (IL) Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Streator.

Climate overview of Streator

Streator, Illinois, United States of America, sees big temperature differences between seasons, with July peaking at 29°C (84°F) and January dropping to 0°C (32°F).

Rain/snowfall is high, totalling around 1065 mm (42 in) per year. June is the wettest month and January the driest.

Streator Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Streator — and find the best time to visit.

Monthly Temperature in Streator

Visitors to Streator can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 29°C (84°F) in July, the warmest time of the year, to a very cold 0°C (32°F) during cooler months like January.

At night, you can expect temperatures ranging from 18°C (64°F) in July to around -9°C (16°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Streator

Streator is known for its substantial rain/snowfall, with annual precipitation reaching 1065 mm (42 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives high rainfall, averaging 137 mm (5.4 in) of precipitation, recorded across 14 rainy days. In contrast, the driest month January brings less snowfall, with 46 mm (1.8 in) over 9 snowy days. For more details, please visit our Streator Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Best Time to Visit Streator

During May, June, July, August, September and October, Streator experiences its most favorable weather, with temperatures between 18°C (65°F) and 29°C (85°F). These mild conditions make it an excellent time for a visit.

The weather does bring rainfall during this period, between 75 mm (3 in) and 137 mm (5.4 in).

Need help choosing your next travel destination? We offer a specialized tool that matches you with locations based on your weather preferences. Explore destinations that suit your climate preferences.

Frequently asked questions about the climate in Streator

What is the best time to visit Streator?

September typically offers the most optimal weather in Streator. In contrast, January, February, March, November and December tend to have less optimal conditions.

What temperatures can I expect in Streator?

Daytime highs range from 0°C (32°F) in January to 29°C (84°F) in July. Nighttime lows range from -9°C (16°F) to 18°C (64°F). Temperatures vary considerably through the year.

How much rain does Streator get?

Annual rainfall is around 1065 mm (42 in). June is the wettest month with 137 mm (5.4 in), while January is the driest with 46 mm (1.8 in).

Streator 3-Day Forecast

Streator (IL) 3-Day Forecast

Streator on the map

Streator is highlighted — select any city to see its climate.

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Where to go in July — average daytime high across popular destinations.

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