Hartland Colony, Sunday, 9 August, 13:40
Overcast. Feels like 77°. High 80°, low 55°.
Hartland Colony, Monday, 10 August
Clear. High 84°, low 51°.
Hartland Colony, Tuesday, 11 August
Clear. High 85°, low 52°.
Hartland Colony, Wednesday, 12 August
Overcast. High 75°, low 59°.
Hartland Colony, Thursday, 13 August
Light rain. High 64°, low 58°.
Hartland Colony, Friday, 14 August
Light rain. High 70°, low 56°.
Hartland Colony, Saturday, 15 August
Partly cloudy. High 79°, low 59°.
Hartland Colony, Sunday, 16 August
Overcast. High 87°, low 62°.
Hartland Colony, Monday, 17 August
Clear. High 82°, low 62°.
Hartland Colony, Tuesday, 18 August
Overcast. High 87°, low 62°.
Hartland Colony, Wednesday, 19 August
Mostly clear. High 88°, low 65°.
Hartland Colony, Thursday, 20 August
Overcast. High 90°, low 68°.
Hartland Colony, Friday, 21 August
Overcast. High 94°, low 69°.
Hartland Colony, Saturday, 22 August
Mostly clear. High 83°, low 69°.
Hartland Colony, Sunday, 23 August
Overcast. High 83°, low 66°.
Hartland Colony, Monday, 24 August
Clear. High 85°, low 62°.
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 Hartland Colony, 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 Hartland Colony, 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.