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Boise, Idaho Climate & Temperature

  • Boise, Idaho, Usa is at 4334'N, 11612'W, 873 m (2865 ft). See map.
  • Boise, Idaho has a mid-latitude steppe/ semi-arid cool climate (Kppen-Geiger classification: BSk).
  • According to the Holdridge life zones system of bioclimatic classification Boise, Idaho is situated in or near the cool temperate steppe biome.
  • The mean temperature is 10.5 degrees Celsius (50.9 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 25 °C (45°F). This indicates that the continentality type is continental, subtype subcontinental. Boise, Idaho Climate Graph
  • Total annual Precipitation averages 307.5 mm (12.1 inches) which is equivalent to 307.5 Litres/m (7.54 Gallons/ft).
  • On average there are 3081 hours of sunshine per year. Visit the sunshine and daylight section to check monthly details including how high in the sky the sun reaches each month.
  • Were you to burrow down through the centre of the Earth from Boise, Idaho you would pop up nearest to the climate station at Port-Aux-Francais, kerguelen islands, French Southern Lands where you would find a Tundra climate (Boreal rain forest biome).

Boise, Idaho Climate Table

  Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 
Average Max Temperature °C ( °F) 2 (36) 7 (44) 12 (53) 16 (61) 22 (71) 27 (81) 32 (90) 31 (88) 25 (77) 18 (65) 9 (49) 3 (38) 17 (63)
 
Average Temperature °C ( °F) -2 (29) 2 (36) 6 (42) 10 (49) 14 (58) 19 (67) 23 (74) 23 (73) 17 (63) 11 (52) 4 (40) -1 (30) 11 (51)
 
Average Min Temperature °C ( °F) -6 (22) -3 (28) 0 (32) 3 (37) 7 (44) 11 (52) 14 (58) 14 (57) 9 (48) 4 (39) -1 (31) -5 (22) 4 (39)
 
Average Precipitation mm (in) 37 (1) 27 (1) 33 (1) 32 (1) 27 (1) 21 (1) 9 (0) 11 (0) 20 (1) 19 (1) 38 (1) 35 (1) 308 (12)
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)
Average Sunlight Hours/ Day 3h 15' 5h 20' 7h 00' 9h 06' 10h 30' 12h 06' 13h 40' 12h 15' 10h 40' 8h 00' 5h 18' 3h 50' 8h 26'
Average Daylight Hours/ Day 9h 20' 10h 25' 11h 51' 13h 23' 14h 41' 15h 21' 15h 03' 13h 55' 12h 27' 10h 55' 9h 37' 8h 59' 12h 00'
Percentage of Sunny (Cloudy) Daylight Hours 36 (64) 52 (48) 60 (40) 69 (31) 72 (28) 80 (20) 92 (8) 89 (11) 87 (13) 74 (26) 56 (44) 44 (56) 70 (30)
Sun altitude at solar noon on the 21st day (). 26.6 36 46.9 58.5 66.7 69.9 66.8 58.4 46.9 35.5 26.4 23 46.7

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