Weather in Grimes, MD
Grimes, Friday, 9 October, 21:20
Overcast. Feels like 57°. High 73°, low 46°.
Monthly outlook for Grimes, MD: average high 67.1°, average low 48.8°. That is 1.4° above the climate normal for October. Precipitation is expected on 7 days (about 4.0 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 13 October (80.8°), the coolest 19 October (31.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 70.1° | 65.7° | +2.5° |
| 19 October – 28 October | 62° | 61.7° | +0.2° |
| 29 October – 7 November | at normal | 58.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Rohrersville (8 mi).
0Grimes, Saturday, 10 October
Overcast. High 71°, low 49°.
1.67
Grimes, Sunday, 11 October
Heavy rain. High 69°, low 52°.
0.1Grimes, Monday, 12 October
Rain. High 75°, low 59°.
0
Grimes, Tuesday, 13 October
Clear. High 81°, low 54°.
0.11Grimes, Wednesday, 14 October
Light rain. High 75°, low 63°.
0.17Grimes, Thursday, 15 October
Rain. High 66°, low 52°.
0.49Grimes, Friday, 16 October
Rain. High 75°, low 52°.
0.11Grimes, Saturday, 17 October
Light rain. High 66°, low 47°.
0Grimes, Sunday, 18 October
Overcast. High 51°, low 37°.
0Grimes, Monday, 19 October
Clear. High 56°, low 32°.
0Grimes, Tuesday, 20 October
Clear. High 59°, low 38°.
0
Grimes, Wednesday, 21 October
Partly cloudy. High 63°, low 42°.
0.02Grimes, Thursday, 22 October
Light rain. High 62°, low 52°.
1.3Grimes, Friday, 23 October
Heavy rain. High 64°, low 54°.
0
Grimes, Saturday, 24 October
Mostly clear. High 68°, low 51°.
0.16Grimes, Sunday, 25 October
Climate normal for this date — 60-year average.
0.13Grimes, Monday, 26 October
Climate normal for this date — 60-year average.
0.16Grimes, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.08Grimes, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.22Grimes, Thursday, 29 October
Climate normal for this date — 60-year average.
0.09Grimes, Friday, 30 October
Climate normal for this date — 60-year average.
0.07Grimes, Saturday, 31 October
Climate normal for this date — 60-year average.
0.07Grimes, Sunday, 1 November
Climate normal for this date — 60-year average.
0.13
Grimes, Monday, 2 November
Climate normal for this date — 60-year average.
0.06Grimes, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Grimes, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Grimes, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Grimes, Friday, 6 November
Climate normal for this date — 60-year average.
0.1Grimes, Saturday, 7 November
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 Grimes, 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 Grimes, 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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