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> Usa > Boise, Idaho > Precipitation
Rainfall/ Precipitation in Boise, Idaho, Usa
- Boise, Idaho receives 307.5 mm (12.1 in) of rainfall per year, or 25.6 mm (1 in) per month.
- On average there are 88 days per year with more than 0.1 mm (0.004 in) of rainfall (precipitation) or 7.3 days with a quantity of rain, sleet, snow etc. per month.
- The driest weather is in July when an average of 8.9 mm (0.4 in) of rainfall (precipitation) occurs.
- The wettest weather is in November when an average of 37.6 mm (1.5 in) of rainfall (precipitation) occurs.
Precipitation Table
| Climate Variable | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Average Precipitation mm (in) | 36.8 (1.45) | 27.2 (1.1) | 32.8 (1.3) | 31.5 (1.2) | 27.4 (1.1) | 20.6 (0.8) | 8.9 (0.4) | 10.9 (0.4) | 20.3 (0.8) | 19 (0.7) | 37.6 (1.5) | 34.5 (1.4) | 307.5 (12.1) | |
 | Precipitation Litres/m² (Gallons/ft²) | 36.8 (0.9) | 27.2 (0.67) | 32.8 (0.8) | 31.5 (0.77) | 27.4 (0.67) | 20.6 (0.51) | 8.9 (0.22) | 10.9 (0.27) | 20.3 (0.5) | 19 (0.47) | 37.6 (0.92) | 34.5 (0.85) | 307.5 (7.54) | |
 | Number of Wet Days (probability of rain on a day) | 12 (39%) | 11 (39%) | 10 (32%) | 8 (27%) | 8 (26%) | 6 (20%) | 2 (6%) | 2 (6%) | 3 (10%) | 6 (19%) | 9 (30%) | 11 (35%) | 88 (24%) | |
 | Percentage of Sunny (Cloudy) Daylight Hours | 36 (64) | 48 (52) | 60 (40) | 67 (33) | 72 (28) | 77 (23) | 92 (8) | 89 (11) | 84 (16) | 74 (26) | 54 (46) | 44 (56) | 70 (30) |