Thornton Weather Forecast
- 60
- 72
Severe Tstms
- 56
- 72
Partly Sunny
- 58
- 76
Mostly Sunny
- 61
- 80
Rain Showers Likely
- 60
- 75
Rain Showers Likely
- 57
- 74
Slight Chance Rain Showers
Today 17 Jun Southern Cook
A slight chance of Thunderstorms late in the morning. Showers. Thunderstorms in the afternoon. Some Thunderstorms may produce heavy Rainfall, then some Thunderstorms may be severe in the afternoon. Locally heavy rainfall possible in the afternoon. Breezy. Highs in the lower 70s. South Winds 10 to 15 Mph, increasing to 15 to 25 Mph in the afternoon. Chance of precipitation near 100 percent.
Tonight 17 Jun Southern Cook
Partly cloudy in the Evening, then clearing. A chance of Showers and Thunderstorms early in the evening. Some Thunderstorms may produce heavy rainfall early in the evening. Breezy with Lows around 60. West Winds 10 to 15 Mph, increasing to 15 to 20 Mph after midnight. Gusts up to 30 Mph. Chance of precipitation 50 percent.
Thornton Temperature Statistics
June Temperature
Lansing Municipal Airport (4.3 miles)
Lowest 3 June, 2026
45.9 °FAverage June
71.1 °FHighest 10 June, 2026
89.4 °F
Climate (2021–2026)
Lansing Municipal Airport (4.3 miles)
Average Low 2021–2026
42.5 °FAverage 2021–2026
51.6 °FAverage High 2021–2026
60.5 °F