Weather in Longmont, CO
Longmont, Wednesday, 21 October, 20:37
Clear. Feels like 63°. High 74°, low 48°.
Monthly outlook for Longmont, CO: average high 64.2°, average low 43.6°. That is 4.4° above the climate normal for October. Precipitation is expected on 1 day (about 0.4 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 23 October (77.1°), the coolest 2 November (34.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 63.1° | 58.5° | +2.6° |
| 31 October – 9 November | 66.1° | 52.9° | +7.3° |
| 10 November – 19 November | at normal | 49.6° | — |
October records over 66 years
0
Longmont, Thursday, 22 October
Overcast. High 73°, low 52°.
0
Longmont, Friday, 23 October
Clear. High 77°, low 54°.
0Longmont, Saturday, 24 October
Overcast. High 56°, low 48°.
0.02
Longmont, Sunday, 25 October
Light rain. High 57°, low 43°.
0.33Longmont, Monday, 26 October
Light rain. High 47°, low 44°.
0
Longmont, Tuesday, 27 October
Mostly clear. High 62°, low 36°.
0Longmont, Wednesday, 28 October
Light rain. High 52°, low 35°.
0Longmont, Thursday, 29 October
Overcast. High 66°, low 36°.
0Longmont, Friday, 30 October
Overcast. High 67°, low 49°.
0.02Longmont, Saturday, 31 October
Light rain. High 67°, low 52°.
0Longmont, Sunday, 1 November
Clear. High 61°, low 38°.
0Longmont, Monday, 2 November
Clear. High 61°, low 35°.
0Longmont, Tuesday, 3 November
Overcast. High 67°, low 40°.
0Longmont, Wednesday, 4 November
Overcast. High 69°, low 45°.
0Longmont, Thursday, 5 November
Mostly clear. High 71°, low 43°.
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.
0.04
Longmont, 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.
0.04Longmont, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02Longmont, Monday, 16 November
Climate normal for this date — 60-year average.
0.04Longmont, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.02Longmont, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.04Longmont, Thursday, 19 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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