Weather in Boulder, WY
Boulder, Friday, 9 October, 14:36
Partly cloudy. Feels like 69°. High 72°, low 37°.
Monthly outlook for Boulder, WY: average high 57.2°, average low 39.4°. That is 4° above the climate normal for October. Precipitation is expected on 6 days (about 2.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 9 October (71.8°), the coolest 11 October (35.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 56.6° | 51.2° | +3° |
| 19 October – 28 October | 58.1° | 47° | +6.2° |
| 29 October – 7 November | at normal | 40.2° | — |
October records over 66 years
0.3
Boulder, Saturday, 10 October
Rain. High 63°, low 36°.
0.76Boulder, Sunday, 11 October
Rain. High 57°, low 36°.
0.25Boulder, Monday, 12 October
Rain. High 54°, low 43°.
0.59Boulder, Tuesday, 13 October
Rain. High 48°, low 43°.
0.12Boulder, Wednesday, 14 October
Light rain. High 48°, low 37°.
0.01Boulder, Thursday, 15 October
Light rain. High 54°, low 39°.
0
Boulder, Friday, 16 October
Overcast. High 55°, low 37°.
0Boulder, Saturday, 17 October
Partly cloudy. High 56°, low 38°.
0Boulder, Sunday, 18 October
Overcast. High 60°, low 39°.
0
Boulder, Monday, 19 October
Clear. High 59°, low 40°.
0Boulder, Tuesday, 20 October
Clear. High 60°, low 42°.
0Boulder, Wednesday, 21 October
Clear. High 59°, low 42°.
0Boulder, Thursday, 22 October
Overcast. High 60°, low 43°.
0
Boulder, Friday, 23 October
Mostly clear. High 55°, low 39°.
0.31Boulder, Saturday, 24 October
Rain. High 55°, low 40°.
0.04Boulder, Sunday, 25 October
Climate normal for this date — 60-year average.
0.04Boulder, Monday, 26 October
Climate normal for this date — 60-year average.
0.03Boulder, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Boulder, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.05
Boulder, Thursday, 29 October
Climate normal for this date — 60-year average.
0.06Boulder, Friday, 30 October
Climate normal for this date — 60-year average.
0.04Boulder, Saturday, 31 October
Climate normal for this date — 60-year average.
0.03Boulder, Sunday, 1 November
Climate normal for this date — 60-year average.
0.06Boulder, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Boulder, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03Boulder, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.03Boulder, Thursday, 5 November
Climate normal for this date — 60-year average.
0.05Boulder, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Boulder, Saturday, 7 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 Boulder, WY 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 Boulder, WY 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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