Today
Mostly clear throughout the day, high +46°, low +45°. Wind up to 2 mph. The day promises to be dry.
Weather in Boulder
United States · Montana · 46.2366, -112.1208
Today Now 9:14 PM
+46° Mostly clear
Hourly forecast
Today10/19
Temperature°F
Cloudiness
Precipitation
Windmph
Wind gusts
Humidity
PressureinHg
Dew point°F
Visibilitymi
UV index
Forecast in words
Tomorrow
Tomorrow partly cloudy: daytime +61°, nighttime +41° — 14° warmer than today.
Week
This week temperatures range from +25° to +63°. Warmest day — Wed, up to +63°. Coldest at night — Sat, +25°. Precipitation expected: Thu, Fri. Clear days — 4. It cools down by the end of the week.
Week vs norm
- Today 10/19 +46° −3° usually +50°
- Tomorrow 10/20 +61° +12° usually +49°
- Wed 10/21 +63° +14° usually +49°
- Thu 10/22 +63° +14° usually +48°
- Fri 10/23 +46° −1° usually +48°
- Sat 10/24 +48° +1° usually +47°
- Sun 10/25 +50° +4° usually +46°
- Mon 10/26 +48° +2° usually +46°
Difference between forecast daytime high and the 1991–2020 norm for this date.
This day, October 19
Today is cooler than usual for this date.
- Heat record +74° 2023
- Cold record +22° 1994
- Most precipitation 0.9 in 2009
- Strongest gust 43 mph 1993
Records for this calendar date, 1991-2024, ERA5 reanalysis.
Climate in Boulder
Today is about 6° colder than usual for October.
| Month | Daytime / Nighttime | Average | Precipitation in |
|---|---|---|---|
| Jan | +24° / +8° | +15° | 1.2 |
| Feb | +28° / +10° | +17° | 1.4 |
| Mar | +37° / +18° | +26° | 1.8 |
| Apr | +46° / +25° | +34° | 2.7 |
| May | +58° / +35° | +46° | 3.9 |
| Jun | +68° / +43° | +55° | 4.4 |
| Jul | +80° / +50° | +64° | 2.3 |
| Aug | +80° / +50° | +64° | 1.9 |
| Sep | +69° / +42° | +54° | 1.8 |
| Oct | +52° / +30° | +39° | 1.7 |
| Nov | +35° / +18° | +25° | 1.4 |
| Dec | +24° / +8° | +15° | 1.4 |
Climatic normals for 1991–2025 years from ERA5-Land reanalysis.
Astronomical data
Sunrise / sunset
7:51 AM | 6:34 PM
Moon
3:52 PM | 12:19 AM
Moon phase
Waxing gibbous 60%
Next solar eclipse
Calculating for this city…