Weather in Great Falls, MD
Great Falls, Monday, 26 October, 20:01
Clear. Feels like 55°. High 71°, low 40°.
Monthly outlook for Great Falls, MD: average high 61.8°, average low 47.6°. That is 1.2° above the climate normal for October. Precipitation is expected on 6 days (about 5.8 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 30 October (74.2°), the coolest 7 November (39.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 65° | 60.9° | +2.3° |
| 5 November – 14 November | 56.6° | 56.2° | +0.2° |
| 15 November – 24 November | at normal | 52.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Tysons (6 mi).
0
Great Falls, Tuesday, 27 October
Clear. High 70°, low 49°.
0
Great Falls, Wednesday, 28 October
Mostly clear. High 66°, low 46°.
0Great Falls, Thursday, 29 October
Clear. High 71°, low 50°.
0Great Falls, Friday, 30 October
Clear. High 74°, low 51°.
0
Great Falls, Saturday, 31 October
Overcast. High 65°, low 47°.
0.4
Great Falls, Sunday, 1 November
Rain. High 62°, low 51°.
2.39Great Falls, Monday, 2 November
Heavy rain. High 60°, low 57°.
0.22Great Falls, Tuesday, 3 November
Rain. High 58°, low 52°.
2.44Great Falls, Wednesday, 4 November
Heavy rain. High 54°, low 48°.
0.25Great Falls, Thursday, 5 November
Rain. High 59°, low 51°.
0Great Falls, Friday, 6 November
Light rain. High 55°, low 46°.
0Great Falls, Saturday, 7 November
Clear. High 54°, low 40°.
0Great Falls, Sunday, 8 November
Clear. High 56°, low 41°.
0Great Falls, Monday, 9 November
Overcast. High 59°, low 43°.
0.14Great Falls, Tuesday, 10 November
Rain. High 57°, low 50°.
0.19
Great Falls, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.23
Great Falls, Thursday, 12 November
Climate normal for this date — 60-year average.
0.1Great Falls, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Great Falls, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Great Falls, Sunday, 15 November
Climate normal for this date — 60-year average.
0.12Great Falls, Monday, 16 November
Climate normal for this date — 60-year average.
0.08Great Falls, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Great Falls, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.11Great Falls, Thursday, 19 November
Climate normal for this date — 60-year average.
0.07Great Falls, Friday, 20 November
Climate normal for this date — 60-year average.
0.09Great Falls, Saturday, 21 November
Climate normal for this date — 60-year average.
0.11Great Falls, Sunday, 22 November
Climate normal for this date — 60-year average.
0.06Great Falls, Monday, 23 November
Climate normal for this date — 60-year average.
0.14Great Falls, Tuesday, 24 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 Great Falls, 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 Great Falls, 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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