Weather, seasons and risks · approximate

Know the weather before you move

Monthly temperatures, snow, sunshine and the best months to be outside, plus wildfire, flood, extreme heat and smoke risk for each place.

🇺🇸 Boulder🇨🇦 Whistler🇨🇦 Vancouver🇨🇦 Victoria🇨🇦 Kelowna🇨🇦 Canmore🇨🇦 Toronto🇨🇦 Muskoka🇨🇦 Montréal🇨🇦 Mont-Tremblant🇨🇦 Halifax🇺🇸 Miami🇺🇸 Scottsdale🇺🇸 Austin🇺🇸 Denver🇺🇸 Park City🇺🇸 San Diego🇺🇸 Asheville🇺🇸 Nashville🇺🇸 Bend🇺🇸 Burlington
Boulder
0°10°20°30°JFMAMJJASONDBoulder, Jan: 1°CBoulder, Feb: 2.5°CBoulder, Mar: 6.5°CBoulder, Apr: 12°CBoulder, May: 17.5°CBoulder, Jun: 21.5°CBoulder, Jul: 23°CBoulder, Aug: 21.5°CBoulder, Sep: 17.5°CBoulder, Oct: 12°CBoulder, Nov: 6.5°CBoulder, Dec: 2.5°CBoulder

Approximate average daily temperature by month, in °C, smoothed from January and July averages.

Boulder

Colorado
Snow a year
220 cm
Sunny days
245
Coldest / warmest month
1° / 23°
Month by month
JFMAMJJASOND
ColdCoolComfortableHot
Best months outside: May, Jun, Jul, Aug, Sep
Wildfire: High Flood: Moderate Extreme heat: Low Air quality: Moderate

Climate figures are approximate averages. Risk levels are illustrative estimates, not official ratings; check government hazard maps (FEMA, NOAA, Natural Resources Canada) and local air-quality data before you buy.

Weather and climate risks by city · Pinned