10-Day Weather Forecast - Petersburg, IL
- |19°FMostly CloudyHourly details
Tonight
19°FMostly clear late this evening then becoming mostly cloudy. Near steady temperature around 18. South winds 5 to 10 mph.
- 48|30°FMostly CloudyHourly details
Day
48°FMostly cloudy and breezy. Not as cool with highs in the lower 50s. South winds 15 to 25 mph with gusts up to 35 mph.
Night
30°FMostly cloudy. Not as cool with lows in the upper 20s. West winds 10 to 15 mph becoming northwest 5 to 10 mph after midnight.
- 45|30°FMostly SunnyHourly details
Day
45°FMostly sunny. Highs in the mid 40s. Northwest winds 5 to 10 mph.
Night
30°FRain and snow likely. Light snow accumulation possible. Lows in the upper 20s. Northeast winds 5 to 10 mph. Chance of precipitation 70 percent.
- 42|29°FMostly SunnyHourly details
Day
42°FMostly sunny. Highs in the mid 40s.
Night
29°FMostly clear. Lows in the upper 20s. Highs around 60.
- 61|37°FMostly SunnyHourly details
Day
61°FMostly clear. Lows in the upper 20s. Highs around 60.
Night
37°FMostly clear. Lows in the mid 30s. Highs in the upper 50s.
Weekend Weather
- 56|26°FMostly SunnyHourly details
Day
56°FMostly clear. Lows in the mid 30s. Highs in the upper 50s.
Night
26°FMostly cloudy. Cooler with lows in the mid 20s.
- 38|27°F40% Chance Frozen MixHourly details
Day
38°FMostly cloudy. A chance of rain and snow in the afternoon. Much cooler with highs in the lower 40s. Chance of precipitation 40 percent.
Night
27°FMostly cloudy with a chance of rain and snow. Lows in the mid 20s. Chance of precipitation 50 percent.
- 37|27°F30% Chance of Snow
Day
37°FMostly cloudy with a chance of rain. A chance of snow in the afternoon. Highs around 40. Chance of precipitation 30 percent.
Night
27°FCloudy with a slight chance of rain-snow mix. Chance of precipitation 25%. Low temperature around 27F. Dew point will be around 26F with an average humidity of 83%. Winds will be 3 mph from the NE.
- 41|28°F30% Chance Frozen Mix
Day
41°FCloudy with a slight chance of rain-snow mix. Chance of precipitation 30%. High temperature around 41F. Dew point will be around 30F with an average humidity of 75%. Winds will be 1 mph from the NE.
Night
28°FPartly cloudy with a slight chance of rain-snow mix. Chance of precipitation 30%. Low temperature around 28F. Dew point will be around 27F with an average humidity of 79%. Winds will be 3 mph from the N.
- 41|31°F30% Chance Frozen Mix
Day
41°FMostly sunny with a slight chance of rain-snow mix. Chance of precipitation 25%. High temperature around 41F. Dew point will be around 25F with an average humidity of 63%. Winds will be 3 mph from the NE.
Night
31°FMostly clear. Low temperature around 31F. Dew point will be around 25F with an average humidity of 70%. Winds will be 2 mph from the SE.













