Weather WorldWatertown, IL 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Watertown, IL Weather Forecast
Watertown, IL Weather Forecast Date: 121 AM CDT Tue Oct 20 2026
The area/counties/county of: Ogle, including the cities of: Rochelle, Oregon, and Byron.or toggle through each period.
Rest of Tonight... Mostly clear. Near steady temperature in the lower 40s. Light and variable winds.
Tuesday... Sunny. Highs around 70. Southeast winds around 5 mph.
Tuesday Night... Clear. Lows around 40. Southeast winds around 5 mph.
Wednesday... Mostly sunny. Highs in the lower 70s. Southwest winds around 5 mph.
Wednesday Night... Mostly clear. Lows in the mid 40s. Light and variable winds.
Thursday... Mostly sunny. Highs in the lower 70s.
Thursday Night... Mostly clear. Lows in the upper 40s.
Friday... Mostly sunny. Highs around 70.
Friday Night... Partly cloudy. Lows in the upper 40s.
Saturday... Partly cloudy. Highs around 70.
Saturday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s.
Sunday... Mostly cloudy. Highs around 70.
Sunday Night... Mostly cloudy. Lows in the upper 40s.
POP = Probability of Precipitation
Watertown Radar Loop
Use the map search tool if you want to place a location marker on the radar map...