Longmont, Colorado Climate
United States
Pop. 92,088 Elev. 1,520 m / 4,987 ft
TZ: America/Denver (UTC-6) ·
Longmont has a dry climate with warm summers reaching 89°F (32°C) in July and cold winters averaging 14°F (-10°C) in January. Rain falls on about 29 days per year (18.9 in / 481 mm total), with snow on 7 days and 35 in (888 mm) of annual accumulation. The city averages 176 sunny days per year and around 20 thunderstorm days.
| Temperature | 89°F (32°C) high | 14°F (-10°C) low |
| Feels like | 92°F (33°C) high | 14°F (-10°C) low |
| Rain | 29 days | 18.9 in (481 mm) /yr |
| Snow | 7 days | 35.0 in (888 mm) /yr |
| Sky | 176 sunny | 20 stormy |
| Wind | 0.7 mph (0.3 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Mar, Apr, Oct
Sky & Air by Month
Cloud cover (%)
43
Jan 45
Feb 49
Mar 51
Apr 53
May 44
Jun 49
Jul 43
Aug 43
Sep 31
Oct 44
Nov 41
Dec Humidity (%)
60
Jan 58
Feb 38
Mar 46
Apr 52
May 52
Jun 47
Jul 50
Aug 53
Sep 53
Oct 50
Nov 50
Dec Weather Days by Month
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 18 mi Rocky Mountain Metropolitan Airport (BJC)
Ski resort 22 mi Hoedown Hill
National park 71 mi Camp Hale - Continental Divide National Monument
Mountain peak
(5,125 ft) 3 mi Standley Hill
Hospital 2 mi Longmont United Hospital
Hiking trail 10 mi Boulder Valley Ranch Trails
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 38°F 3°C | 14°F -10°C | 0.0 in 0 mm | 12.6 in321 mm | 16 |
| February | 45°F 7°C | 18°F -8°C | 0.2 in 5 mm | 10.3 in261 mm | 13 |
| March | 62°F 17°C | 33°F 1°C | 1.3 in 34 mm | 2.0 in51 mm | 14 |
| April | 66°F 19°C | 36°F 2°C | 1.5 in 38 mm | 4.4 in111 mm | 12 |
| May | 72°F 22°C | 46°F 8°C | 4.2 in 105 mm | — | 12 |
| June | 84°F 29°C | 55°F 13°C | 3.0 in 75 mm | — | 15 |
| July | 89°F 32°C | 60°F 16°C | 1.9 in 48 mm | — | 12 |
| August | 86°F 30°C | 59°F 15°C | 3.4 in 85 mm | — | 17 |
| September | 78°F 26°C | 52°F 11°C | 2.3 in 59 mm | — | 14 |
| October | 67°F 20°C | 42°F 5°C | 0.9 in 22 mm | — | 21 |
| November | 60°F 15°C | 33°F 1°C | 0.2 in 6 mm | 0.7 in17 mm | 14 |
| December | 56°F 13°C | 29°F -2°C | 0.2 in 4 mm | 5.0 in127 mm | 16 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 16 | 0 |
| February | 13 | 0 |
| March | 14 | 1 |
| April | 12 | 1 |
| May | 12 | 3 |
| June | 15 | 4 |
| July | 12 | 2 |
| August | 17 | 7 |
| September | 14 | 2 |
| October | 21 | 0 |
| November | 14 | 0 |
| December | 16 | 0 |