Weather in Granby, CO
Granby, Tuesday, 20 October, 01:27
Clear. Feels like 33°. High 60°, low 38°.
Monthly outlook for Granby, CO: average high 55°, average low 33.8°. That is 5.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 21 October (64°), the coolest 2 November (25.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 58.3° | 47.9° | +5.8° |
| 30 October – 8 November | 49.5° | 42° | +4.2° |
| 9 November – 18 November | at normal | 37.9° | — |
October records over 66 years
0
Granby, Wednesday, 21 October
Light rain. High 64°, low 41°.
0.05Granby, Thursday, 22 October
Light rain. High 61°, low 41°.
0.01Granby, Friday, 23 October
Light rain. High 59°, low 43°.
0Granby, Saturday, 24 October
Light rain. High 53°, low 36°.
0.01Granby, Sunday, 25 October
Light rain. High 58°, low 37°.
0
Granby, Monday, 26 October
Clear. High 60°, low 32°.
0
Granby, Tuesday, 27 October
Partly cloudy. High 57°, low 30°.
0Granby, Wednesday, 28 October
Partly cloudy. High 56°, low 31°.
0
Granby, Thursday, 29 October
Mostly clear. High 55°, low 32°.
0Granby, Friday, 30 October
Light rain. High 53°, low 32°.
0.18
Granby, Saturday, 31 October
Snow. High 53°, low 34°.
0.24Granby, Sunday, 1 November
Snow. High 45°, low 27°.
0Granby, Monday, 2 November
Mostly clear. High 49°, low 26°.
0
Granby, Tuesday, 3 November
Overcast. High 52°, low 28°.
0Granby, Wednesday, 4 November
Overcast. High 45°, low 32°.
0.06
Granby, Thursday, 5 November
Climate normal for this date — 60-year average.
0.04Granby, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Granby, Saturday, 7 November
Climate normal for this date — 60-year average.
0.07Granby, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Granby, Monday, 9 November
Climate normal for this date — 60-year average.
0.06Granby, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Granby, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Granby, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Granby, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Granby, Saturday, 14 November
Climate normal for this date — 60-year average.
0.05Granby, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Granby, Monday, 16 November
Climate normal for this date — 60-year average.
0.06Granby, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.05Granby, Wednesday, 18 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 Granby, 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 Granby, 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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