Boise endures about 46 more days above 90 °F each year.
Grand Rapids picks up around 57 more inches of snow each winter. Boise sees rain or snow on roughly 69 fewer days each year.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Boise | Metric | Grand Rapids |
|---|---|---|
| 239 days | Sunny daysclear or partly cloudy skies | 163 days |
| 12 in | Precipitationper year | 38 in |
| 73 days | Wet daysrain or snow per year | 142 days |
| 18 in | Snowfallper year | 75 in |
| 54 days | Hot daysabove 90 °F | 8 days |
| 109 days | Freezing nightsat or below 32 °F | 141 days |
| 54% | Humidityaverage relative | 71% |
| 53 °F | Average temperatureyear round | 48 °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.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Boise high | 39 | 46 | 55 | 62 | 72 | 81 | 92 | 91 | 80 | 65 | 49 | 39 |
| Grand Rapids high | 31 | 34 | 44 | 57 | 69 | 79 | 82 | 81 | 74 | 61 | 47 | 36 |
| Boise low | 26 | 29 | 35 | 39 | 47 | 54 | 62 | 61 | 52 | 41 | 32 | 25 |
| Grand Rapids low | 17 | 18 | 25 | 35 | 46 | 57 | 60 | 59 | 51 | 40 | 31 | 23 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Boise | 1.8 | 1.2 | 1.4 | 1.2 | 1.2 | 0.6 | 0.1 | 0.1 | 0.4 | 0.9 | 1.4 | 2.0 |
| Grand Rapids | 2.4 | 2.0 | 2.5 | 4.0 | 4.3 | 3.8 | 3.8 | 3.6 | 3.1 | 3.4 | 2.7 | 2.4 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Boise | 14 | 14 | 15 | 18 | 20 | 23 | 29 | 28 | 26 | 23 | 16 | 14 |
| Grand Rapids | 5 | 9 | 14 | 14 | 15 | 17 | 21 | 20 | 19 | 15 | 10 | 5 |
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
- Boise vs Garden City, ID
- Boise vs Meridian, ID
- Boise vs Kuna, ID
- Boise vs Star, ID
- Boise vs Eagle, ID
- Boise vs Nampa, ID
- Boise vs New York, NY
- Boise vs Los Angeles, CA
- Boise vs Chicago, IL
- Boise vs Houston, TX
- Boise vs Phoenix, AZ
- Boise vs Philadelphia, PA
Grand Rapids vs another city
- Grand Rapids vs East Grand Rapids, MI
- Grand Rapids vs Wyoming, MI
- Grand Rapids vs Walker, MI
- Grand Rapids vs Comstock Park, MI
- Grand Rapids vs Northview, MI
- Grand Rapids vs Kentwood, MI
- Grand Rapids vs New York, NY
- Grand Rapids vs Los Angeles, CA
- Grand Rapids vs Chicago, IL
- Grand Rapids vs Houston, TX
- Grand Rapids vs Phoenix, AZ
- Grand Rapids vs Philadelphia, PA
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).