Johnson Dam Rainfall Forecast
- 15%
- No Rain
- 5%
- 5%
- 25%
- 5%
- 5%
Johnson Dam Rainfall Statistics
May Rainfall
Hettinger, Hettinger Municipal Airport (20.5 miles)
Total Rainfall May
–Daily Average May
–Wettest Day 6 May, 2026
–Wet Days May
–
Climate (2010–Present)
Hettinger, Hettinger Municipal Airport (20.5 miles)
Annual Average 2021–2025
15.6inMonthly Average 2021–2026
1.3inDaily Average 2021–2026
0.04inWettest Day 15 May, 2025
3.6in