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As of 09:39 EDT

Weather in Williston, MD

74°Current weather

Williston, Wednesday, 14 October, 09:39

Mostly clear. Feels like 75°. High 85°, low 65°.

Pressure29.94 inHg
Wind6.9 mph SW
Humidity79%
Visibility6.2 mi
Dew point67°
Thu, 1569° / 57°0.17Rain
69 °Rain

Williston, Thursday, 15 October

Rain. High 69°, low 57°.

Pressure30.21 inHg
Wind8 mph NE
Humidity62%
Visibility6.2 mi
Dew point52°
Fri, 1680° / 56°0.22Rain
80 °Rain

Williston, Friday, 16 October

Rain. High 80°, low 56°.

Pressure29.85 inHg
Wind13.8 mph SW
Humidity82%
Visibility6.2 mi
Dew point66°
Sat, 1766° / 48°0.22Rain
66 °Rain

Williston, Saturday, 17 October

Rain. High 66°, low 48°.

Pressure30.15 inHg
Wind14.5 mph N
Humidity50%
Visibility6.2 mi
Dew point38°
Sun, 1855° / 41°0Clear
55 °Clear

Williston, Sunday, 18 October

Clear. High 55°, low 41°.

Pressure30.62 inHg
Wind10.6 mph N
Humidity50%
Visibility—
Dew point30°
Mon, 1961° / 41°0Clear
61 °Clear

Williston, Monday, 19 October

Clear. High 61°, low 41°.

Pressure30.62 inHg
Wind6.4 mph E
Humidity58%
Visibility—
Dew point40°
Tue, 2071° / 50°0Overcast
71 °Overcast

Williston, Tuesday, 20 October

Overcast. High 71°, low 50°.

Pressure30.42 inHg
Wind6.2 mph NE
Humidity65%
Visibility—
Dew point51°
Wed, 2171° / 53°0Overcast
71 °Overcast

Williston, Wednesday, 21 October

Overcast. High 71°, low 53°.

Pressure30.33 inHg
Wind5.8 mph SE
Humidity60%
Visibility—
Dew point50°
Thu, 2272° / 53°0Clear
72 °Clear

Williston, Thursday, 22 October

Clear. High 72°, low 53°.

Pressure30.21 inHg
Wind11.8 mph SW
Humidity63%
Visibility—
Dew point52°
Fri, 2364° / 47°0Clear
64 °Clear

Williston, Friday, 23 October

Clear. High 64°, low 47°.

Pressure30.24 inHg
Wind14.2 mph N
Humidity49%
Visibility—
Dew point38°
Sat, 2465° / 44°0Partly cloudy
65 °Partly cloudy

Williston, Saturday, 24 October

Partly cloudy. High 65°, low 44°.

Pressure30.36 inHg
Wind7.2 mph S
Humidity41%
Visibility—
Dew point33°
Sun, 2569° / 51°0.06Light rain
69 °Light rain

Williston, Sunday, 25 October

Light rain. High 69°, low 51°.

Pressure29.94 inHg
Wind17.6 mph NW
Humidity55%
Visibility—
Dew point50°
Mon, 2656° / 45°0Clear
56 °Clear

Williston, Monday, 26 October

Clear. High 56°, low 45°.

Pressure30.24 inHg
Wind16 mph NW
Humidity43%
Visibility—
Dew point30°
Tue, 2764° / 44°0Partly cloudy
64 °Partly cloudy

Williston, Tuesday, 27 October

Partly cloudy. High 64°, low 44°.

Pressure30.21 inHg
Wind10.2 mph SW
Humidity44%
Visibility—
Dew point35°
Wed, 2867° / 48°0Overcast
67 °Overcast

Williston, Wednesday, 28 October

Overcast. High 67°, low 48°.

Pressure30.18 inHg
Wind9.3 mph SW
Humidity42%
Visibility—
Dew point37°
Thu, 2965° / 55°0.22Rain
65 °Rain

Williston, Thursday, 29 October

Rain. High 65°, low 55°.

Pressure29.85 inHg
Wind20.5 mph S
Humidity79%
Visibility—
Dew point59°

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 Williston, 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 Williston, 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.