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Boise, ID vs San Jose, CA weather comparison

Boise

ID

Boise picks up around 18 more inches of snow each winter.

San Jose has around 104 fewer freezing nights a year. Boise endures about 33 more days above 90 °F each year.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Boise, ID and San Jose, CA
BoiseMetricSan Jose
239 daysSunny daysclear or partly cloudy skies263 days
12 inPrecipitationper year17 in
73 daysWet daysrain or snow per year60 days
18 inSnowfallper year0 in
54 daysHot daysabove 90 °F21 days
109 daysFreezing nightsat or below 32 °F5 days
54%Humidityaverage relative67%
53 °FAverage temperatureyear round61 °F

Monthly temperatures

Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.

BoiseSan Jose

Daily highs

406080JanMarMayJulSepNovBoise, Jan: 39 °FBoise, Feb: 46 °FBoise, Mar: 55 °FBoise, Apr: 62 °FBoise, May: 72 °FBoise, Jun: 81 °FBoise, Jul: 92 °FBoise, Aug: 91 °FBoise, Sep: 80 °FBoise, Oct: 65 °FBoise, Nov: 49 °FBoise, Dec: 39 °FSan Jose, Jan: 59 °FSan Jose, Feb: 62 °FSan Jose, Mar: 66 °FSan Jose, Apr: 70 °FSan Jose, May: 75 °FSan Jose, Jun: 80 °FSan Jose, Jul: 82 °FSan Jose, Aug: 83 °FSan Jose, Sep: 82 °FSan Jose, Oct: 75 °FSan Jose, Nov: 65 °FSan Jose, Dec: 59 °F

Daily lows

4060JanMarMayJulSepNovBoise, Jan: 26 °FBoise, Feb: 29 °FBoise, Mar: 35 °FBoise, Apr: 39 °FBoise, May: 47 °FBoise, Jun: 54 °FBoise, Jul: 62 °FBoise, Aug: 61 °FBoise, Sep: 52 °FBoise, Oct: 41 °FBoise, Nov: 32 °FBoise, Dec: 25 °FSan Jose, Jan: 42 °FSan Jose, Feb: 44 °FSan Jose, Mar: 46 °FSan Jose, Apr: 48 °FSan Jose, May: 52 °FSan Jose, Jun: 55 °FSan Jose, Jul: 58 °FSan Jose, Aug: 58 °FSan Jose, Sep: 57 °FSan Jose, Oct: 52 °FSan Jose, Nov: 46 °FSan Jose, Dec: 42 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Boise high394655627281929180654939
San Jose high596266707580828382756559
Boise low262935394754626152413225
San Jose low424446485255585857524642

Monthly precipitation

Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.

BoiseSan Jose
0.01.02.03.0JanMarMayJulSepNovBoise, Jan: 1.8 inBoise, Feb: 1.2 inBoise, Mar: 1.4 inBoise, Apr: 1.2 inBoise, May: 1.2 inBoise, Jun: 0.6 inBoise, Jul: 0.1 inBoise, Aug: 0.1 inBoise, Sep: 0.4 inBoise, Oct: 0.9 inBoise, Nov: 1.4 inBoise, Dec: 2.0 inSan Jose, Jan: 3.4 inSan Jose, Feb: 3.4 inSan Jose, Mar: 2.6 inSan Jose, Apr: 1.2 inSan Jose, May: 0.6 inSan Jose, Jun: 0.1 inSan Jose, Jul: 0.0 inSan Jose, Aug: 0.0 inSan Jose, Sep: 0.1 inSan Jose, Oct: 0.8 inSan Jose, Nov: 1.5 inSan Jose, Dec: 3.0 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Boise1.81.21.41.21.20.60.10.10.40.91.42.0
San Jose3.43.42.61.20.60.10.00.00.10.81.53.0

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

BoiseSan Jose
0102030JanMarMayJulSepNovBoise, Jan: 14 daysBoise, Feb: 14 daysBoise, Mar: 15 daysBoise, Apr: 18 daysBoise, May: 20 daysBoise, Jun: 23 daysBoise, Jul: 29 daysBoise, Aug: 28 daysBoise, Sep: 26 daysBoise, Oct: 23 daysBoise, Nov: 16 daysBoise, Dec: 14 daysSan Jose, Jan: 15 daysSan Jose, Feb: 14 daysSan Jose, Mar: 16 daysSan Jose, Apr: 19 daysSan Jose, May: 24 daysSan Jose, Jun: 27 daysSan Jose, Jul: 30 daysSan Jose, Aug: 30 daysSan Jose, Sep: 29 daysSan Jose, Oct: 26 daysSan Jose, Nov: 19 daysSan Jose, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Boise141415182023292826231614
San Jose151416192427303029261916

Keep comparing

Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.

Boise vs another city

See the full Boise, ID climate profile

More Idaho cities

San Jose vs another city

See the full San Jose, CA climate profile

More California cities

About this data

Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).