Weather in Longmont, CO
Longmont, Friday, 23 October, 01:57
Clear. Feels like 58°. High 76°, low 57°.
Monthly outlook for Longmont, CO: average high 59.7°, average low 39.8°. That is 2.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 23 October (75.6°), the coolest 2 November (27.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 60° | 56.8° | +1.8° |
| 2 November – 11 November | 59.1° | 52.4° | +3.7° |
| 12 November – 21 November | at normal | 49° | — |
October records over 66 years
0
Longmont, Saturday, 24 October
Overcast. High 59°, low 50°.
0.19
Longmont, Sunday, 25 October
Rain. High 59°, low 44°.
0.06Longmont, Monday, 26 October
Light rain. High 58°, low 47°.
0
Longmont, Tuesday, 27 October
Mostly clear. High 59°, low 38°.
0
Longmont, Wednesday, 28 October
Partly cloudy. High 61°, low 43°.
0Longmont, Thursday, 29 October
Overcast. High 53°, low 43°.
0.01Longmont, Friday, 30 October
Light rain. High 59°, low 37°.
0Longmont, Saturday, 31 October
Light rain. High 58°, low 38°.
0.02Longmont, Sunday, 1 November
Light rain. High 58°, low 33°.
0
Longmont, Monday, 2 November
Clear. High 49°, low 28°.
0Longmont, Tuesday, 3 November
Partly cloudy. High 51°, low 29°.
0Longmont, Wednesday, 4 November
Overcast. High 59°, low 30°.
0Longmont, Thursday, 5 November
Partly cloudy. High 66°, low 37°.
0Longmont, Friday, 6 November
Clear. High 68°, low 41°.
0Longmont, Saturday, 7 November
Partly cloudy. High 61°, low 42°.
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.
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.
0.06Longmont, Friday, 20 November
Climate normal for this date — 60-year average.
0.04Longmont, Saturday, 21 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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