Weather in Green Valley, MD
Green Valley, Sunday, 9 August, 02:33
Partly cloudy. Feels like 74°. High 87°, low 72°.
Monthly outlook for Green Valley, MD: average high 82.3°, average low 64°. That is 0.9° below the climate normal for August. Precipitation is expected on 6 days (about 0.8 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 24 August (90.6°), the coolest 16 August (53.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 82.5° | 84.6° | -1.2° |
| 19 August – 28 August | 82° | 83.3° | -0.7° |
| 29 August – 7 September | at normal | 82.1° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Frederick (11 mi).
0
Green Valley, Monday, 10 August
Light rain. High 88°, low 71°.
0.19Green Valley, Tuesday, 11 August
Rain. High 91°, low 68°.
0.11Green Valley, Wednesday, 12 August
Light rain. High 90°, low 68°.
0.04Green Valley, Thursday, 13 August
Light rain. High 84°, low 66°.
0
Green Valley, Friday, 14 August
Overcast. High 79°, low 58°.
0Green Valley, Saturday, 15 August
Overcast. High 78°, low 56°.
0Green Valley, Sunday, 16 August
Overcast. High 77°, low 53°.
0.06Green Valley, Monday, 17 August
Light rain. High 76°, low 65°.
0.2Green Valley, Tuesday, 18 August
Light rain. High 74°, low 65°.
0.04Green Valley, Wednesday, 19 August
Light rain. High 82°, low 66°.
0.13Green Valley, Thursday, 20 August
Light rain. High 79°, low 66°.
0
Green Valley, Friday, 21 August
Clear. High 80°, low 57°.
0
Green Valley, Saturday, 22 August
Partly cloudy. High 80°, low 55°.
0.06Green Valley, Sunday, 23 August
Light rain. High 80°, low 68°.
0Green Valley, Monday, 24 August
Clear. High 91°, low 69°.
0.05Green Valley, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.05Green Valley, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.14Green Valley, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13
Green Valley, Friday, 28 August
Climate normal for this date — 60-year average.
0.08Green Valley, Saturday, 29 August
Climate normal for this date — 60-year average.
0.05Green Valley, Sunday, 30 August
Climate normal for this date — 60-year average.
0.1Green Valley, Monday, 31 August
Climate normal for this date — 60-year average.
0.11Green Valley, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11Green Valley, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.08Green Valley, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Green Valley, Friday, 4 September
Climate normal for this date — 60-year average.
0.11Green Valley, Saturday, 5 September
Climate normal for this date — 60-year average.
0.25Green Valley, Sunday, 6 September
Climate normal for this date — 60-year average.
0.09Green Valley, 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 Green Valley, 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 Green Valley, 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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