Weather in Petersburg, Illinois, United States

7-Day Detailed Weather Forecast for Petersburg

This Afternoon

Temperature: 60°F

Wind Speed: 13 mph

Wind Direction: SE

Forecast: Patchy fog. Cloudy. High near 60, with temperatures falling to around 54 in the afternoon. Southeast wind around 13 mph, with gusts as high as 22 mph.

Tonight

Temperature: 54°F

Wind Speed: 9 to 13 mph

Wind Direction: S

Forecast: Patchy fog before 10pm, then patchy fog and a slight chance of rain between 10pm and midnight, then a chance of rain and patchy fog. Cloudy. Low around 54, with temperatures rising to around 59 overnight. South wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

Sunday

Temperature: 66°F

Wind Speed: 8 to 28 mph

Wind Direction: SW

Forecast: A chance of thunderstorms and a chance of rain before 8am, then rain and a chance of thunderstorms. Cloudy. High near 66, with temperatures falling to around 42 in the afternoon. Southwest wind 8 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

Temperature: 14°F

Wind Speed: 28 mph

Wind Direction: WNW

Forecast: A slight chance of rain before 7pm, then a slight chance of sleet between 7pm and 8pm. Mostly cloudy, with a low around 14. Wind chill values as low as -3. West northwest wind around 28 mph, with gusts as high as 45 mph. New snow accumulation of less than half an inch possible.

Monday

Temperature: 24°F

Wind Speed: 21 to 28 mph

Wind Direction: WNW

Forecast: Partly sunny, with a high near 24. West northwest wind 21 to 28 mph, with gusts as high as 45 mph.

Monday Night

Temperature: 12°F

Wind Speed: 12 to 17 mph

Wind Direction: NW

Forecast: Mostly clear, with a low around 12. Northwest wind 12 to 17 mph, with gusts as high as 30 mph.

Tuesday

Temperature: 30°F

Wind Speed: 10 mph

Wind Direction: W

Forecast: Mostly sunny, with a high near 30. West wind around 10 mph, with gusts as high as 20 mph.

Tuesday Night

Temperature: 23°F

Wind Speed: 9 mph

Wind Direction: W

Forecast: Partly cloudy, with a low around 23.

Wednesday

Temperature: 38°F

Wind Speed: 7 to 10 mph

Wind Direction: WNW

Forecast: Partly sunny, with a high near 38.

Wednesday Night

Temperature: 20°F

Wind Speed: 8 mph

Wind Direction: WNW

Forecast: Mostly cloudy, with a low around 20.

New Year's Day

Temperature: 31°F

Wind Speed: 8 mph

Wind Direction: NNW

Forecast: Mostly sunny, with a high near 31.

Thursday Night

Temperature: 14°F

Wind Speed: 6 mph

Wind Direction: NW

Forecast: Partly cloudy, with a low around 14.

Friday

Temperature: 34°F

Wind Speed: 7 mph

Wind Direction: SW

Forecast: Mostly sunny, with a high near 34.

Friday Night

Temperature: 23°F

Wind Speed: 7 mph

Wind Direction: S

Forecast: Partly cloudy, with a low around 23.