Johnstown Weather Forecast
- 31
- 60
Mostly Sunny
- 34
- 59
Mostly Sunny
- 32
- 61
Partly Sunny
- 34
- 62
Partly Sunny
- 33
- 62
Partly Sunny
- 29
- 54
Chance Rain/Snow
Today 21 Oct Wind River Basin
Sunny. Highs around 60. Southwest Winds around 10 Mph with Gusts up to 20 Mph, becoming northwest in the afternoon.
Tonight 21 Oct Wind River Basin
Clear. Lows around 30. Southwest Winds around 10 Mph with Gusts up to 20 Mph.
Johnstown Temperature Statistics
October Temperature
Riverton Regional Airport (13 miles)
Lowest 13 October, 2025
28 °FAverage October
50.2 °FHighest 3 October, 2025
80.1 °F
Climate (2020–Present)
Riverton Regional Airport (13 miles)
Average Low 2020–2025
32.7 °FAverage 2020–2025
45.4 °FAverage High 2020–2025
58.3 °F