Freeport, IL Monthly Weather

Stephenson County9:17 PM CDT42.30°N, 89.62°WElevation 778 ft
← September

October 2026

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Mon
Tue
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Sat
167°/63°0.36 inAvg 69°/45°
266°/45°0.44 inAvg 68°/45°
366°/39°Avg 68°/45°
472°/39°Avg 67°/44°
571°/40°Avg 67°/44°
671°/42°Avg 66°/44°
778°/42°Avg 66°/43°
878°/44°Avg 66°/43°
971°/44°Avg 65°/42°
1066°/50°0.18 inAvg 65°/42°
1187°/48°Avg 64°/42°
1283°/49°Avg 64°/42°
1387°/60°Avg 63°/41°
1474°/55°Avg 63°/41°
1568°/53°Avg 62°/40°
1660°/46°0.47 inAvg 62°/40°
1757°/29°0.03 inAvg 61°/40°
1857°/31°Avg 61°/40°
1965°/35°Avg 60°/39°
20Avg 60°/39°
21 Sunny 73°/46°Avg 59°/38°
22 Sunny 73°/47°Avg 59°/38°
23 Sunny 72°/50°Avg 58°/38°
24 Mostly Sunny 72°/52°Avg 58°/38°
25 Partly Sunny 71°/49°Avg 57°/37°
26 Mostly Cloudy then Slight Chance Rain Showers 64°/43°Avg 56°/37°
27 Slight Chance Rain Showers then Partly Sunny 57°/–Avg 56°/36°
28 Sunny 49°/32°Avg 56°/36°
29 Cloudy 53°/33°Avg 55°/36°
30Avg 54°/35°
31Avg 54°/35°
Average high71° (normal 65°)
Average low45° (normal 42°)
Warmest / coldest87° / 29°
Precipitation1.48 in (normal 1.96 in to date)
Record high today82° (1953)
Record low today19° (2018)

Observed: Stockton 3nne, 32 km away, records since 1943. Normals 1991–2020. Climate data from NOAA's Regional Climate Centers (ACIS); recent days are preliminary. Days ahead: the forecast.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.