Weather in Longmont, CO
Longmont, Friday, 16 October, 06:59
Clear. Feels like 33°. High 57°, low 33°.
Monthly outlook for Longmont, CO: average high 61.9°, average low 39°. That is 1.4° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 22 October (75.6°), the coolest 26 October (26.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 64.8° | 61.5° | +1.8° |
| 26 October – 4 November | 57.2° | 54.5° | +1.5° |
| 5 November – 14 November | at normal | 51.7° | — |
October records over 66 years
0
Longmont, Saturday, 17 October
Clear. High 74°, low 39°.
0
Longmont, Sunday, 18 October
Overcast. High 70°, low 35°.
0Longmont, Monday, 19 October
Overcast. High 63°, low 42°.
0Longmont, Tuesday, 20 October
Clear. High 69°, low 43°.
0Longmont, Wednesday, 21 October
Clear. High 70°, low 43°.
0Longmont, Thursday, 22 October
Overcast. High 76°, low 49°.
0.13
Longmont, Friday, 23 October
Light rain. High 75°, low 54°.
0.39
Longmont, Saturday, 24 October
Snow. High 59°, low 35°.
0.4Longmont, Sunday, 25 October
Snow. High 35°, low 32°.
0Longmont, Monday, 26 October
Clear. High 51°, low 27°.
0Longmont, Tuesday, 27 October
Overcast. High 62°, low 37°.
0Longmont, Wednesday, 28 October
Overcast. High 63°, low 44°.
0.21Longmont, Thursday, 29 October
Rain. High 50°, low 38°.
0Longmont, Friday, 30 October
Clear. High 55°, low 33°.
0Longmont, Saturday, 31 October
Overcast. High 61°, low 40°.
0.06
Longmont, Sunday, 1 November
Climate normal for this date — 60-year average.
0.07Longmont, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Longmont, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03
Longmont, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Longmont, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03Longmont, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Longmont, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Longmont, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Longmont, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Longmont, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.04Longmont, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.04Longmont, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Longmont, Friday, 13 November
Climate normal for this date — 60-year average.
0.06Longmont, Saturday, 14 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Longmont, CO are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Longmont, CO since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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