Glenham, Saturday, 8 August, 14:05
Clear. Feels like 86°. High 92°, low 57°.
Glenham, Sunday, 9 August
Partly cloudy. High 90°, low 59°.
Glenham, Monday, 10 August
Rain. High 100°, low 62°.
Glenham, Tuesday, 11 August
Clear. High 90°, low 63°.
Glenham, Wednesday, 12 August
Light rain. High 88°, low 64°.
Glenham, Thursday, 13 August
Mostly clear. High 83°, low 60°.
Glenham, Friday, 14 August
Overcast. High 90°, low 65°.
Glenham, Saturday, 15 August
Partly cloudy. High 97°, low 72°.
Glenham, Sunday, 16 August
Light rain. High 95°, low 73°.
Glenham, Monday, 17 August
Light rain. High 96°, low 65°.
Glenham, Tuesday, 18 August
Light rain. High 97°, low 71°.
Glenham, Wednesday, 19 August
Light rain. High 80°, low 67°.
Glenham, Thursday, 20 August
Mostly clear. High 89°, low 64°.
Glenham, Friday, 21 August
Clear. High 97°, low 68°.
Glenham, Saturday, 22 August
Mostly clear. High 78°, low 55°.
Glenham, Sunday, 23 August
Mostly clear. High 85°, low 56°.
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 Glenham, SD 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 Glenham, SD 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.