Weather in Longmont, CO
Longmont, Thursday, 15 October, 07:26
Rain. Feels like 43°. High 56°, low 41°.
Monthly outlook for Longmont, CO: average high 63.7°, average low 41.3°. That is 2.1° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 21 October (75.3°), the coolest 17 October (33.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 64.9° | 61.6° | +1.8° |
| 25 October – 3 November | 61.5° | 55.1° | +3.6° |
| 4 November – 13 November | at normal | 52.1° | — |
October records over 66 years
0
Longmont, Friday, 16 October
Clear. High 54°, low 34°.
0Longmont, Saturday, 17 October
Clear. High 70°, low 34°.
0
Longmont, Sunday, 18 October
Overcast. High 70°, low 35°.
0Longmont, Monday, 19 October
Clear. High 68°, low 50°.
0Longmont, Tuesday, 20 October
Clear. High 70°, low 43°.
0Longmont, Wednesday, 21 October
Clear. High 75°, low 45°.
0Longmont, Thursday, 22 October
Overcast. High 75°, low 51°.
0.58Longmont, Friday, 23 October
Rain. High 55°, low 43°.
0Longmont, Saturday, 24 October
Clear. High 57°, low 38°.
0Longmont, Sunday, 25 October
Overcast. High 59°, low 39°.
0Longmont, Monday, 26 October
Overcast. High 65°, low 46°.
0.04Longmont, Tuesday, 27 October
Light rain. High 65°, low 46°.
0Longmont, Wednesday, 28 October
Clear. High 62°, low 39°.
0
Longmont, Thursday, 29 October
Mostly clear. High 63°, low 39°.
0Longmont, Friday, 30 October
Clear. High 55°, low 38°.
0.04
Longmont, Saturday, 31 October
Climate normal for this date — 60-year average.
0.06Longmont, 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.
0.03Longmont, 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.
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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