Weather in Derwood, MD
Derwood, Wednesday, 21 October, 02:24
Clear. Feels like 48°. High 66°, low 44°.
Monthly outlook for Derwood, MD: average high 59.3°, average low 42.4°. That is 1.1° below the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 27 October (68.4°), the coolest 4 November (35.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 60.8° | 61.8° | -0.6° |
| 31 October – 9 November | 56.8° | 59° | -1.2° |
| 10 November – 19 November | at normal | 53.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Gaithersburg (4 mi).
0
Derwood, Thursday, 22 October
Clear. High 67°, low 39°.
0Derwood, Friday, 23 October
Clear. High 57°, low 43°.
0Derwood, Saturday, 24 October
Clear. High 59°, low 38°.
0Derwood, Sunday, 25 October
Clear. High 62°, low 41°.
0Derwood, Monday, 26 October
Clear. High 65°, low 40°.
0
Derwood, Tuesday, 27 October
Overcast. High 68°, low 50°.
0
Derwood, Wednesday, 28 October
Partly cloudy. High 53°, low 44°.
0.2
Derwood, Thursday, 29 October
Light rain. High 53°, low 44°.
0Derwood, Friday, 30 October
Clear. High 57°, low 40°.
0Derwood, Saturday, 31 October
Partly cloudy. High 57°, low 40°.
0.04Derwood, Sunday, 1 November
Light rain. High 64°, low 45°.
0.61Derwood, Monday, 2 November
Rain. High 65°, low 55°.
0Derwood, Tuesday, 3 November
Partly cloudy. High 55°, low 43°.
0
Derwood, Wednesday, 4 November
Mostly clear. High 50°, low 36°.
0Derwood, Thursday, 5 November
Clear. High 50°, low 36°.
0.07Derwood, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Derwood, Saturday, 7 November
Climate normal for this date — 60-year average.
0.17Derwood, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Derwood, Monday, 9 November
Climate normal for this date — 60-year average.
0.14Derwood, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.17Derwood, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.2
Derwood, Thursday, 12 November
Climate normal for this date — 60-year average.
0.09Derwood, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Derwood, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Derwood, Sunday, 15 November
Climate normal for this date — 60-year average.
0.12Derwood, Monday, 16 November
Climate normal for this date — 60-year average.
0.08Derwood, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Derwood, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.1Derwood, Thursday, 19 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 Derwood, 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 Derwood, 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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