Diamond City, Sunday, 9 August, 03:12
Mostly clear. Feels like 59°. High 78°, low 51°.
Diamond City, Monday, 10 August
Clear. High 80°, low 45°.
Diamond City, Tuesday, 11 August
Clear. High 82°, low 52°.
Diamond City, Wednesday, 12 August
Overcast. High 78°, low 52°.
Diamond City, Thursday, 13 August
Overcast. High 81°, low 52°.
Diamond City, Friday, 14 August
Light rain. High 63°, low 49°.
Diamond City, Saturday, 15 August
Light rain. High 77°, low 45°.
Diamond City, Sunday, 16 August
Light rain. High 64°, low 52°.
Diamond City, Monday, 17 August
Light rain. High 79°, low 49°.
Diamond City, Tuesday, 18 August
Light rain. High 73°, low 48°.
Diamond City, Wednesday, 19 August
Overcast. High 73°, low 50°.
Diamond City, Thursday, 20 August
Clear. High 78°, low 47°.
Diamond City, Friday, 21 August
Light rain. High 75°, low 52°.
Diamond City, Saturday, 22 August
Rain. High 65°, low 47°.
Diamond City, Sunday, 23 August
Clear. High 65°, low 42°.
Diamond City, Monday, 24 August
Overcast. High 72°, low 41°.
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 Diamond City, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
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.
They are real temperature extremes recorded in Diamond City, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.