Weather in New Castle, CO
New Castle, Sunday, 9 August, 07:04
Overcast. Feels like 64°. High 91°, low 66°.
0.09
New Castle, Monday, 10 August
Light rain. High 92°, low 59°.
0New Castle, Tuesday, 11 August
Overcast. High 96°, low 60°.
0.09New Castle, Wednesday, 12 August
Light rain. High 87°, low 62°.
0.52New Castle, Thursday, 13 August
Rain. High 81°, low 59°.
0.37New Castle, Friday, 14 August
Rain. High 80°, low 61°.
0.02New Castle, Saturday, 15 August
Light rain. High 84°, low 60°.
0New Castle, Sunday, 16 August
Overcast. High 81°, low 64°.
0
New Castle, Monday, 17 August
Clear. High 84°, low 61°.
0
New Castle, Tuesday, 18 August
Mostly clear. High 91°, low 62°.
0New Castle, Wednesday, 19 August
Clear. High 94°, low 63°.
0New Castle, Thursday, 20 August
Clear. High 97°, low 63°.
0New Castle, Friday, 21 August
Overcast. High 97°, low 65°.
0New Castle, Saturday, 22 August
Overcast. High 99°, low 66°.
0.01New Castle, Sunday, 23 August
Light rain. High 99°, low 66°.
0New Castle, Monday, 24 August
Light rain. High 96°, low 64°.
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 New Castle, 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 New Castle, 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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