Weather in Defense Heights, MD
Defense Heights, Sunday, 9 August, 07:22
Overcast. Feels like 75°. High 90°, low 74°.
Monthly outlook for Defense Heights, MD: average high 91°, average low 70.3°. That is 3.5° above the climate normal for August. Precipitation is expected on 7 days (about 0.9 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 24 August (102.6°), the coolest 16 August (61.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 86.8° | 85.4° | +0.8° |
| 19 August – 28 August | 97.9° | 83.9° | +7.8° |
| 29 August – 7 September | at normal | 82.8° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Bladensburg (1 mi).
0
Defense Heights, Monday, 10 August
Partly cloudy. High 94°, low 74°.
0.06
Defense Heights, Tuesday, 11 August
Light rain. High 94°, low 72°.
0.09Defense Heights, Wednesday, 12 August
Light rain. High 92°, low 72°.
0.03Defense Heights, Thursday, 13 August
Light rain. High 88°, low 73°.
0Defense Heights, Friday, 14 August
Overcast. High 82°, low 65°.
0Defense Heights, Saturday, 15 August
Overcast. High 81°, low 63°.
0Defense Heights, Sunday, 16 August
Overcast. High 82°, low 62°.
0.07Defense Heights, Monday, 17 August
Light rain. High 80°, low 68°.
0.01Defense Heights, Tuesday, 18 August
Light rain. High 87°, low 67°.
0
Defense Heights, Wednesday, 19 August
Clear. High 89°, low 69°.
0Defense Heights, Thursday, 20 August
Partly cloudy. High 93°, low 69°.
0.07Defense Heights, Friday, 21 August
Light rain. High 102°, low 72°.
0.04Defense Heights, Saturday, 22 August
Light rain. High 99°, low 77°.
0.05Defense Heights, Sunday, 23 August
Light rain. High 102°, low 76°.
0.47Defense Heights, Monday, 24 August
Rain. High 103°, low 74°.
0.07Defense Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.05Defense Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13
Defense Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
0.16Defense Heights, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Defense Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Defense Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Defense Heights, Monday, 31 August
Climate normal for this date — 60-year average.
0.13Defense Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11Defense Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Defense Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Defense Heights, Friday, 4 September
Climate normal for this date — 60-year average.
0.13Defense Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
0.25Defense Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
0.07Defense 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 Defense 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 Defense 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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