Weather in Chillum Heights, MD
Chillum Heights, Sunday, 9 August, 05:18
Overcast. Feels like 74°. High 90°, low 73°.
Monthly outlook for Chillum Heights, MD: average high 91.2°, average low 71.3°. That is 3.6° above the climate normal for August. Precipitation is expected on 6 days (about 0.9 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 24 August (102.9°), the coolest 16 August (62.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 87° | 85.4° | +0.9° |
| 19 August – 28 August | 98.2° | 84.1° | +7.8° |
| 29 August – 7 September | at normal | 82.9° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Chillum (0 mi).
0
Chillum Heights, Monday, 10 August
Partly cloudy. High 94°, low 74°.
0.06
Chillum Heights, Tuesday, 11 August
Light rain. High 94°, low 73°.
0.09Chillum Heights, Wednesday, 12 August
Light rain. High 92°, low 74°.
0.02Chillum Heights, Thursday, 13 August
Light rain. High 88°, low 73°.
0Chillum Heights, Friday, 14 August
Overcast. High 82°, low 66°.
0Chillum Heights, Saturday, 15 August
Overcast. High 81°, low 64°.
0Chillum Heights, Sunday, 16 August
Overcast. High 81°, low 63°.
0.07Chillum Heights, Monday, 17 August
Light rain. High 81°, low 69°.
0
Chillum Heights, Tuesday, 18 August
Mostly clear. High 87°, low 67°.
0
Chillum Heights, Wednesday, 19 August
Clear. High 90°, low 70°.
0Chillum Heights, Thursday, 20 August
Partly cloudy. High 94°, low 71°.
0.07Chillum Heights, Friday, 21 August
Light rain. High 102°, low 74°.
0.02Chillum Heights, Saturday, 22 August
Light rain. High 99°, low 79°.
0.05Chillum Heights, Sunday, 23 August
Light rain. High 102°, low 77°.
0.48Chillum Heights, Monday, 24 August
Rain. High 103°, low 74°.
0.07Chillum Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.05Chillum Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13
Chillum Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
0.16Chillum Heights, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Chillum Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Chillum Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Chillum Heights, Monday, 31 August
Climate normal for this date — 60-year average.
0.13Chillum Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11Chillum Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Chillum Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Chillum Heights, Friday, 4 September
Climate normal for this date — 60-year average.
0.13Chillum Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
0.25Chillum Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
0.07Chillum Heights, Monday, 7 September
Climate normal for this date — 60-year average.
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 Chillum Heights, MD 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 Chillum Heights, MD 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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