Boise Climate and Average Weather
Climate of Boise: average temperatures, rainfall and seasons month by month.
Climate in Boise month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 39° | 25° | 2,0 in | ★★☆☆☆ |
| February | 46° | 30° | 3,2 in | ★★☆☆☆ |
| March | 56° | 35° | 2,0 in | ★★★☆☆ |
| April | 62° | 39° | 2,0 in | ★★★★☆ |
| May | 73° | 48° | 0,9 in | ★★★★★ |
| June | 83° | 56° | 0,7 in | ★★★★★ |
| July | 95° | 66° | 0,2 in | ★★★★★ |
| August | 91° | 62° | 0,4 in | ★★★★★ |
| September | 82° | 56° | 0,4 in | ★★★★★ |
| October | 65° | 43° | 1,1 in | ★★★★☆ |
| November | 51° | 34° | 1,6 in | ★★★☆☆ |
| December | 44° | 30° | 3,0 in | ★★☆☆☆ |
Climate type: Continental. Source: Open-Meteo archive (ERA5).
Recent extremes in Boise
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Boise compares with nearby places
Annual averages, and the difference against Boise.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Palouse Falls State Park | 233 mi | 56°F | +33°F warmer | 13 in |
| Smith Rock State Park | 251 mi | 51°F | 35°F cooler | 20 in |
| Great Salt Lake | 254 mi | 41°F | 46°F cooler | 11 in |
| Grand Teton | 270 mi | 18°F | 69°F cooler | 51 in |
| Antelope Island State Park | 270 mi | 53°F | 34°F cooler | 21 in |
Best time to visit Boise
Go in May, June, July, August and September. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
What this means for Boise
Today is slightly warmer than average for August. The forecast high of 96°F is 5.4°F above the 91°F typical for this month.
A 17% chance means most of the area stays dry; a passing shower is possible but short.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 82°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- Avoid long hikes after mid-morning; start at dawn or leave it for a cooler day.
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
Summary
Boise is a city in Idaho. Boise is known for Greenbelt and outdoor access. It has a population of about 240.000.
Right now it is 95°F (35°C) in Boise with clear sky. It feels like 91°F. Today runs from 78°F to 96°F. Chance of precipitation is 17%. Sightseeing conditions score 7.6/10 - good conditions.
The best time to visit Boise is May, June, July, August and September. The climate is continental. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 95°F, while January is the coldest with lows near 25°F.
The closest major airport is Salt Lake City International Airport (SLC), about 291 mi away. Nearby highlights include Palouse Falls State Park.
In plain terms. Today is slightly warmer than average for August. The forecast high of 96°F is 5.4°F above the 91°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Boise today at 9.5/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Boise
| Type | City |
|---|---|
| State | Idaho |
| Country | United States |
| Continent | North America |
| Coordinates | 43°36′54″N 116°12′8.3″W (43.615, -116.2023) |
| Population | 240.000 |
| Known for | Greenbelt and outdoor access |
| Local time | 4:59 AM (UTC-06:00) |
| Best months | May, June, July, August and September |
| Climate | Continental |
Weather map for Boise
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Boise
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Boise?
Boise is a city in Idaho. Its coordinates are 43.615, -116.2023. It lies in North America.
What is the weather like in Boise right now?
It is currently 95°F (35°C) with clear sky. Humidity is 17% and wind is 6 mph.
When is the best time to visit Boise?
May, June, July, August and September offer the most comfortable conditions in Boise, which has a continental climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Boise in?
Boise observes America/Boise (UTC-06:00). The local time is 4:59 AM.
How many people live in Boise?
Boise has a population of approximately 240.000.
What is the nearest airport to Boise?
The closest airports are Salt Lake City International Airport (SLC), 291 mi away.
What are the top things to do in Boise?
Popular options include Palouse Falls State Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 4:59 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
