Weather in Sylvan Grove, MD
Sylvan Grove, Sunday, 9 August, 01:06
Overcast. Feels like 75°. High 86°, low 71°.
Monthly outlook for Sylvan Grove, MD: average high 85.1°, average low 63.5°. That is 1.1° above the climate normal for August. Precipitation is expected on 8 days (about 1.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 10 August (96.7°), the coolest 22 August (54.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 84.8° | 83.9° | +0.5° |
| 19 August – 28 August | 85.7° | 82.6° | +1.7° |
| 29 August – 7 September | at normal | 81.3° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Hagerstown (4 mi).
0.3
Sylvan Grove, Monday, 10 August
Rain. High 97°, low 69°.
0.38Sylvan Grove, Tuesday, 11 August
Heavy rain. High 88°, low 66°.
0.05Sylvan Grove, Wednesday, 12 August
Light rain. High 91°, low 67°.
0.05Sylvan Grove, Thursday, 13 August
Light rain. High 83°, low 63°.
0Sylvan Grove, Friday, 14 August
Overcast. High 80°, low 58°.
0
Sylvan Grove, Saturday, 15 August
Clear. High 83°, low 57°.
0
Sylvan Grove, Sunday, 16 August
Partly cloudy. High 85°, low 56°.
0.04Sylvan Grove, Monday, 17 August
Light rain. High 78°, low 67°.
0.07Sylvan Grove, Tuesday, 18 August
Light rain. High 78°, low 66°.
0.06Sylvan Grove, Wednesday, 19 August
Light rain. High 90°, low 64°.
0.11Sylvan Grove, Thursday, 20 August
Light rain. High 78°, low 66°.
0Sylvan Grove, Friday, 21 August
Clear. High 81°, low 56°.
0Sylvan Grove, Saturday, 22 August
Partly cloudy. High 84°, low 54°.
0Sylvan Grove, Sunday, 23 August
Overcast. High 90°, low 67°.
0Sylvan Grove, Monday, 24 August
Clear. High 91°, low 68°.
0.05
Sylvan Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.05Sylvan Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13
Sylvan Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
0.14Sylvan Grove, Friday, 28 August
Climate normal for this date — 60-year average.
0.06Sylvan Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
0.04Sylvan Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
0.08Sylvan Grove, Monday, 31 August
Climate normal for this date — 60-year average.
0.11Sylvan Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.08Sylvan Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.05Sylvan Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
0.1Sylvan Grove, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Sylvan Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
0.21Sylvan Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Sylvan Grove, 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 Sylvan Grove, 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 Sylvan Grove, 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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