NimbocastLongmont, CO Weather
Live radar, hourly and 7-day forecast, and National Weather Service alerts for Longmont, Boulder County, Colorado.
Updated Jul 29, 2026, 3:05 PM local time · Radar refreshes every 5 minutes
☁️
Longmont
90°F
Wind 20 mph
Humidity 33%
Cloud cover 100%
UV index 8
Alerts 0
Active alerts
✓
No active National Weather Service alerts for Longmont, CO.
Longmont weather radar
Light
Heavy
Next 24 hours
Now
☁️
90°F
36%
4 PM
☁️
91°F
32%
5 PM
⛅
84°F
29%
6 PM
🌦️
83°F
23%
7 PM
🌦️
79°F
14%
8 PM
🌦️
71°F
10%
9 PM
🌦️
70°F
6%
10 PM
☁️
70°F
3%
11 PM
☁️
69°F
2%
12 AM
🌤️
68°F
1%
1 AM
☀️
67°F
1%
2 AM
🌤️
66°F
1%
3 AM
☀️
66°F
3%
4 AM
☀️
65°F
2%
5 AM
☁️
66°F
1%
6 AM
🌧️
67°F
2%
7 AM
⛅
67°F
1%
8 AM
🌤️
71°F
1%
9 AM
⛅
84°F
1%
10 AM
☀️
88°F
11 AM
☀️
91°F
12 PM
☀️
93°F
1%
1 PM
☀️
95°F
3%
2 PM
☀️
94°F
8%
7-day forecast
Today
Jul 29
🌦️
92°F
65°F
36%
Thu
Jul 30
🌧️
95°F
65°F
18%
Fri
Jul 31
🌦️
94°F
63°F
42%
Sat
Aug 1
🌦️
93°F
62°F
42%
Sun
Aug 2
☁️
100°F
64°F
1%
Mon
Aug 3
🌦️
104°F
67°F
13%
Tue
Aug 4
🌦️
90°F
67°F
18%
Weather near Longmont
9 mi
Erie, CO12 mi
Lafayette, CO13 mi
Louisville, CO14 mi
Boulder, CO16 mi
Loveland, CO17 mi
Broomfield, CO19 mi
Brighton, CO20 mi
Northglenn, CO
Alerts are relayed from the National Weather Service and may lag
the official source. In a life-threatening situation always follow
weather.gov and local emergency
broadcasts.