Camp Sumner, Saturday, 8 August, 15:18
Clear. Feels like 87°. High 84°, low 68°.
Camp Sumner, Sunday, 9 August
Clear. High 82°, low 65°.
Camp Sumner, Monday, 10 August
Light rain. High 84°, low 62°.
Camp Sumner, Tuesday, 11 August
Overcast. High 80°, low 65°.
Camp Sumner, Wednesday, 12 August
Rain. High 76°, low 63°.
Camp Sumner, Thursday, 13 August
Light rain. High 74°, low 56°.
Camp Sumner, Friday, 14 August
Clear. High 70°, low 49°.
Camp Sumner, Saturday, 15 August
Clear. High 70°, low 47°.
Camp Sumner, Sunday, 16 August
Overcast. High 73°, low 50°.
Camp Sumner, Monday, 17 August
Overcast. High 75°, low 53°.
Camp Sumner, Tuesday, 18 August
Light rain. High 75°, low 62°.
Camp Sumner, Wednesday, 19 August
Partly cloudy. High 77°, low 59°.
Camp Sumner, Thursday, 20 August
Overcast. High 78°, low 55°.
Camp Sumner, Friday, 21 August
Heavy rain. High 71°, low 58°.
Camp Sumner, Saturday, 22 August
Light rain. High 76°, low 59°.
Camp Sumner, Sunday, 23 August
Light rain. High 66°, low 50°.
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 Camp Sumner, MA 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 Camp Sumner, MA 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.