CLIMATE CHARTS

Roy, Montana

Latitude: 47.4869 Longitude: -108.8372

Elevation: 3085 feet (940.3 meters)

Roy, Montana Temperature Chart Daily average maximum and minimum temperatures for Roy, Montana Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High & Low Temperature °F  °C -30 -34.4 -20 -28.9 -10 -23.3 0 -17.8 10 -12.2 20 -6.7 30 -1.1 40 4.4 50 10.0 60 15.6 70 21.1 80 26.7 90 32.2 100 37.8 110 43.3 Roy, Montana Precipitation Chart Precipitation chart for Roy, Montana Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Precipitation In. Cm. 0.00 0.00 0.10 0.25 0.20 0.51 0.30 0.76 0.40 1.02 0.50 1.27 0.60 1.52 0.70 1.78 0.80 2.03 0.90 2.29 1.00 2.54 Daylight Chart for ROY, MT Daylight chart for ROY, MT. Latitude 47.5. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Sunrise/Sunset Daylight NOON NOON 0 0 2 2 4 4 6 6 8 8 10 10 12 12 14 2 16 4 18 6 20 8 22 10 24 12

Monthly Data Table for Roy, Montana

Imperial Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °F 34.6 38.1 47.6 57.9 67.3 76.1 86.0 85.6 73.7 60.4 45.4 34.6
Minimum Temperature °F 9.7 13.4 22.0 30.8 40.0 48.5 53.8 52.2 42.5 32.0 20.4 10.3
Heating Degree Days °F 1328 1099 936 620 359 134 27 41 237 585 963 1319
Cooling Degree Days °F 0 0 0 0 7 53 178 162 30 2 0 0
Precipitation in. 0.36 0.30 0.68 1.11 2.77 2.35 1.76 1.26 1.15 0.85 0.41 0.49

Metric Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °C 1.4 3.4 8.7 14.4 19.6 24.5 30.0 29.8 23.2 15.8 7.4 1.4
Minimum Temperature °C -12.4 -10.3 -5.6 -0.7 4.4 9.2 12.1 11.2 5.8 0.0 -6.4 -12.1
Heating Degree Days °C 738 611 520 344 199 74 15 23 132 325 535 733
Cooling Degree Days °C 0 0 0 0 4 29 99 90 17 1 0 0
Precipitation cm. 0.91 0.76 1.73 2.82 7.04 5.97 4.47 3.20 2.92 2.16 1.04 1.24
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