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As of 02:02 EDT

Weather in Williston, MD

75°Current weather

Williston, Thursday, 15 October, 02:02

Overcast. Feels like 76°. High 75°, low 60°.

Pressure29.97 inHg
Wind6.9 mph N
Humidity78%
Visibility6.2 mi
Dew point67°
Fri, 1682° / 59°0.22Rain
82 °Rain

Williston, Friday, 16 October

Rain. High 82°, low 59°.

Pressure29.85 inHg
Wind13.8 mph SW
Humidity76%
Visibility6.2 mi
Dew point66°
Sat, 1766° / 47°0.2Rain
66 °Rain

Williston, Saturday, 17 October

Rain. High 66°, low 47°.

Pressure30.12 inHg
Wind17.2 mph N
Humidity52%
Visibility6.2 mi
Dew point39°
Sun, 1857° / 41°0Clear
57 °Clear

Williston, Sunday, 18 October

Clear. High 57°, low 41°.

Pressure30.59 inHg
Wind7.2 mph NE
Humidity47%
Visibility6.2 mi
Dew point33°
Mon, 1963° / 42°0Clear
63 °Clear

Williston, Monday, 19 October

Clear. High 63°, low 42°.

Pressure30.53 inHg
Wind4.6 mph NE
Humidity48%
Visibility—
Dew point36°
Tue, 2068° / 44°0Clear
68 °Clear

Williston, Tuesday, 20 October

Clear. High 68°, low 44°.

Pressure30.30 inHg
Wind6.5 mph NW
Humidity59%
Visibility—
Dew point44°
Wed, 2169° / 52°0Clear
69 °Clear

Williston, Wednesday, 21 October

Clear. High 69°, low 52°.

Pressure30.39 inHg
Wind8.3 mph NE
Humidity53%
Visibility—
Dew point45°
Thu, 2268° / 52°0Clear
68 °Clear

Williston, Thursday, 22 October

Clear. High 68°, low 52°.

Pressure30.47 inHg
Wind10.6 mph E
Humidity56%
Visibility—
Dew point47°
Fri, 2369° / 49°0Clear
69 °Clear

Williston, Friday, 23 October

Clear. High 69°, low 49°.

Pressure30.42 inHg
Wind5.1 mph S
Humidity56%
Visibility—
Dew point46°
Sat, 2473° / 52°0Mostly clear
73 °Mostly clear

Williston, Saturday, 24 October

Mostly clear. High 73°, low 52°.

Pressure30.45 inHg
Wind6.7 mph E
Humidity57%
Visibility—
Dew point49°
Sun, 2575° / 54°0Clear
75 °Clear

Williston, Sunday, 25 October

Clear. High 75°, low 54°.

Pressure30.42 inHg
Wind8.1 mph SE
Humidity62%
Visibility—
Dew point53°
Mon, 2676° / 60°0Overcast
76 °Overcast

Williston, Monday, 26 October

Overcast. High 76°, low 60°.

Pressure30.18 inHg
Wind14.1 mph S
Humidity66%
Visibility—
Dew point59°
Tue, 2766° / 60°0.06Light rain
66 °Light rain

Williston, Tuesday, 27 October

Light rain. High 66°, low 60°.

Pressure30.15 inHg
Wind6.5 mph S
Humidity95%
Visibility—
Dew point62°
Wed, 2865° / 61°0.43Rain
65 °Rain

Williston, Wednesday, 28 October

Rain. High 65°, low 61°.

Pressure30.00 inHg
Wind16.8 mph E
Humidity90%
Visibility—
Dew point60°
Thu, 2972° / 58°2.01Heavy rain
72 °Heavy rain

Williston, Thursday, 29 October

Heavy rain. High 72°, low 58°.

Pressure29.65 inHg
Wind17.3 mph NW
Humidity85%
Visibility—
Dew point62°
Fri, 3064° / 54°0Clear
64 °Clear

Williston, Friday, 30 October

Clear. High 64°, low 54°.

Pressure30.09 inHg
Wind14.6 mph NW
Humidity64%
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.