Jamestown Weather Forecast
- 46
- 57
Increasing Clouds
- 48
- 74
Mostly Sunny
- 58
- 75
Mostly Sunny
- 55
- 77
Rain Showers
- 43
- 64
Slight Chance Rain Showers
- 42
- 62
Partly Sunny
Today 20 Apr Grant
Mostly sunny. Highs in the upper 50s. South Winds 5 to 10 Mph.
Tonight 20 Apr Grant
Partly cloudy. Not as cool with Lows in the mid 40s. South Winds 10 to 15 Mph.
Jamestown Temperature Statistics
April Temperature
Platteville Municipal Airport (8.7 miles)
Lowest 7 April, 2026
23.5 °FAverage April
48.9 °FHighest 17 April, 2026
78.1 °F
Climate (2021–Present)
Platteville Municipal Airport (8.7 miles)
Average Low 2021–2026
40.7 °FAverage 2021–2026
49.9 °FAverage High 2021–2026
58.7 °F