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As of 11:03 EDT

Weather in Williston, MD

66°Current weather

Williston, Friday, 16 October, 11:03

Overcast. Feels like 67°. High 79°, low 61°.

Pressure29.88 inHg
Wind9.2 mph SW
Humidity100%
Visibility6.2 mi
Dew point66°
Sat, 1764° / 46°0.4Rain
64 °Rain

Williston, Saturday, 17 October

Rain. High 64°, low 46°.

Pressure30.21 inHg
Wind15.3 mph N
Humidity50%
Visibility6.2 mi
Dew point36°
Sun, 1857° / 40°0Partly cloudy
57 °Partly cloudy

Williston, Sunday, 18 October

Partly cloudy. High 57°, low 40°.

Pressure30.56 inHg
Wind12.1 mph NE
Humidity44%
Visibility6.2 mi
Dew point32°
Mon, 1956° / 45°0Overcast
56 °Overcast

Williston, Monday, 19 October

Overcast. High 56°, low 45°.

Pressure30.36 inHg
Wind11.9 mph N
Humidity64%
Visibility6.2 mi
Dew point41°
Tue, 2067° / 51°0Partly cloudy
67 °Partly cloudy

Williston, Tuesday, 20 October

Partly cloudy. High 67°, low 51°.

Pressure30.12 inHg
Wind15.3 mph N
Humidity51%
Visibility—
Dew point41°
Wed, 2162° / 52°0.09Light rain
62 °Light rain

Williston, Wednesday, 21 October

Light rain. High 62°, low 52°.

Pressure30.18 inHg
Wind17.3 mph NE
Humidity56%
Visibility—
Dew point43°
Thu, 2257° / 49°0Overcast
57 °Overcast

Williston, Thursday, 22 October

Overcast. High 57°, low 49°.

Pressure30.30 inHg
Wind12.3 mph NE
Humidity73%
Visibility—
Dew point45°
Fri, 2363° / 45°0Overcast
63 °Overcast

Williston, Friday, 23 October

Overcast. High 63°, low 45°.

Pressure30.12 inHg
Wind11 mph N
Humidity62%
Visibility—
Dew point42°
Sat, 2460° / 47°0Overcast
60 °Overcast

Williston, Saturday, 24 October

Overcast. High 60°, low 47°.

Pressure30.24 inHg
Wind13.7 mph NE
Humidity65%
Visibility—
Dew point44°
Sun, 2559° / 48°0Overcast
59 °Overcast

Williston, Sunday, 25 October

Overcast. High 59°, low 48°.

Pressure30.36 inHg
Wind13.2 mph NE
Humidity65%
Visibility—
Dew point46°
Mon, 2665° / 51°0Overcast
65 °Overcast

Williston, Monday, 26 October

Overcast. High 65°, low 51°.

Pressure30.33 inHg
Wind10 mph NE
Humidity81%
Visibility—
Dew point51°
Tue, 2767° / 50°0Clear
67 °Clear

Williston, Tuesday, 27 October

Clear. High 67°, low 50°.

Pressure30.27 inHg
Wind5.8 mph E
Humidity66%
Visibility—
Dew point48°
Wed, 2866° / 49°0Overcast
66 °Overcast

Williston, Wednesday, 28 October

Overcast. High 66°, low 49°.

Pressure30.30 inHg
Wind5.8 mph SE
Humidity65%
Visibility—
Dew point47°
Thu, 2972° / 53°0Overcast
72 °Overcast

Williston, Thursday, 29 October

Overcast. High 72°, low 53°.

Pressure30.27 inHg
Wind5.2 mph S
Humidity65%
Visibility—
Dew point51°
Fri, 3072° / 55°0Clear
72 °Clear

Williston, Friday, 30 October

Clear. High 72°, low 55°.

Pressure30.24 inHg
Wind7.3 mph SW
Humidity61%
Visibility—
Dew point51°
Sat, 3173° / 55°0.04Light rain
73 °Light rain

Williston, Saturday, 31 October

Light rain. High 73°, low 55°.

Pressure30.09 inHg
Wind15.5 mph N
Humidity52%
Visibility—
Dew point47°

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.