Weather in Great Falls, MD
Great Falls, Thursday, 29 October, 07:19
Partly cloudy. Feels like 53°. High 72°, low 50°.
Monthly outlook for Great Falls, MD: average high 63.2°, average low 48.7°. That is 2.8° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 30 October (73°), the coolest 8 November (40.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 66.7° | 59.8° | +3.9° |
| 8 November – 17 November | 57.4° | 54.9° | +1.4° |
| 18 November – 27 November | at normal | 52° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Tysons (6 mi).
0
Great Falls, Friday, 30 October
Clear. High 73°, low 54°.
0
Great Falls, Saturday, 31 October
Overcast. High 61°, low 45°.
0Great Falls, Sunday, 1 November
Overcast. High 64°, low 48°.
0Great Falls, Monday, 2 November
Overcast. High 68°, low 47°.
0Great Falls, Tuesday, 3 November
Overcast. High 71°, low 48°.
0
Great Falls, Wednesday, 4 November
Mostly clear. High 72°, low 54°.
1.04
Great Falls, Thursday, 5 November
Heavy rain. High 71°, low 59°.
0.12Great Falls, Friday, 6 November
Light rain. High 58°, low 48°.
0Great Falls, Saturday, 7 November
Clear. High 57°, low 43°.
0Great Falls, Sunday, 8 November
Clear. High 56°, low 41°.
0Great Falls, Monday, 9 November
Clear. High 59°, low 43°.
0.11Great Falls, Tuesday, 10 November
Light rain. High 52°, low 47°.
0Great Falls, Wednesday, 11 November
Overcast. High 58°, low 48°.
0Great Falls, Thursday, 12 November
Overcast. High 62°, low 53°.
0.06Great Falls, Friday, 13 November
Light rain. High 57°, low 51°.
0.07Great Falls, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09
Great Falls, Sunday, 15 November
Climate normal for this date — 60-year average.
0.12
Great 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.
0.09Great Falls, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.13Great Falls, Thursday, 26 November
Climate normal for this date — 60-year average.
0.09Great Falls, Friday, 27 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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