Boise - Recent Annual Temperatures, Rain & Snow





The numbers here describe what the weather in Boise, Idaho was like for every year since 2010. A series of tables gives data by year for temperature, precipitation and snowfall.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many really hot and cold days occurred each year. Then there's information on how much rain and snow actually landed during recent years, as well as how often Boise had wet or snowy weather.

The climate data come from weather measurements made at Boise Airport.

Temperature Weather iconTemperature

Boise temperature averages by year
High °F Low °F Year High °C Low °C
65 43 2018 19 6
64 42 2017 18 6
66 43 2016 19 6
66 44 2015 19 7
65 43 2014 18 6
63 40 2013 17 5
67 44 2012 19 7
64 41 2011 18 5
64 43 2010 18 6
Number of days each year when the temperature in Boise dropped to 0 or 32 or below, or rose to at least 70 or 90 degrees Fahrenheit
0 °F
-18 °C
32 °F
0 °C
Year 70 °F
21 °C
90 °F
32 °C
0 103 2018 152 55
5 102 2017 135 70
0 84 2016 160 56
0 93 2015 173 56
0 82 2014 160 50
6 127 2013 147 73
0 89 2012 157 68
0 117 2011 135 62
0 84 2010 143 46

Rainy Weather iconPrecipitation

This table gives the total precipitation that fell on Boise during each year from 2010. The number of days with precipitation counts the days when rainfall or snowfall (when melted) amounted to 0.01 inches (0.3 millimeters) or more.

Total precipitation in Boise
Days Year Inches Milli­metres
85 2018 10.7 272
106 2017 15.4 391
75 2016 8.7 222
103 2015 11.0 279
100 2014 15.5 394
69 2013 9.6 244
97 2012 11.5 292
91 2011 10.5 268
108 2010 15.0 382

Snowy Weather iconSnow

Amount of snowfall in Boise and number of days when new snow totalled at least 1 inch (2.5 centimetres)
Days Year Inches Centi­metres
4 2018 15.3 39
12 2017 34.9 89
6 2016 16.9 43
3 2015 9.3 24
6 2014 19.6 50
9 2013 20.4 52
2 2012 10.8 27
3 2011 6.7 17
8 2010 23.0 58
Reference

Jay Lawrimore. 2016. Global Summary of the Year, Version 1.0. NOAA National Centers for Environmental Information. 

Boise - Extremes
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