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As of 09:34 EDT

Weather in Williston, MD

46°Current weather

Williston, Sunday, 18 October, 09:34

Clear. Feels like 41°. High 56°, low 40°.

Pressure30.56 inHg
Wind9.8 mph N
Humidity60%
Visibility6.2 mi
Dew point33°
Mon, 1961° / 44°0Clear
61 °Clear

Williston, Monday, 19 October

Clear. High 61°, low 44°.

Pressure30.39 inHg
Wind10.7 mph N
Humidity48%
Visibility6.2 mi
Dew point40°
Tue, 2066° / 48°0Clear
66 °Clear

Williston, Tuesday, 20 October

Clear. High 66°, low 48°.

Pressure30.21 inHg
Wind11.5 mph N
Humidity52%
Visibility6.2 mi
Dew point44°
Wed, 2161° / 46°0Clear
61 °Clear

Williston, Wednesday, 21 October

Clear. High 61°, low 46°.

Pressure30.21 inHg
Wind10.6 mph N
Humidity55%
Visibility6.2 mi
Dew point41°
Thu, 2263° / 45°0Clear
63 °Clear

Williston, Thursday, 22 October

Clear. High 63°, low 45°.

Pressure30.12 inHg
Wind8.9 mph N
Humidity55%
Visibility—
Dew point38°
Fri, 2356° / 44°0Clear
56 °Clear

Williston, Friday, 23 October

Clear. High 56°, low 44°.

Pressure30.36 inHg
Wind12.3 mph N
Humidity53%
Visibility—
Dew point34°
Sat, 2460° / 41°0Clear
60 °Clear

Williston, Saturday, 24 October

Clear. High 60°, low 41°.

Pressure30.62 inHg
Wind10.2 mph NE
Humidity54%
Visibility—
Dew point37°
Sun, 2564° / 45°0Mostly clear
64 °Mostly clear

Williston, Sunday, 25 October

Mostly clear. High 64°, low 45°.

Pressure30.53 inHg
Wind5.8 mph W
Humidity58%
Visibility—
Dew point42°
Mon, 2669° / 51°0Partly cloudy
69 °Partly cloudy

Williston, Monday, 26 October

Partly cloudy. High 69°, low 51°.

Pressure30.36 inHg
Wind7 mph NW
Humidity53%
Visibility—
Dew point46°
Tue, 2765° / 51°0Overcast
65 °Overcast

Williston, Tuesday, 27 October

Overcast. High 65°, low 51°.

Pressure30.33 inHg
Wind9.3 mph N
Humidity56%
Visibility—
Dew point47°
Wed, 2867° / 49°0Overcast
67 °Overcast

Williston, Wednesday, 28 October

Overcast. High 67°, low 49°.

Pressure30.42 inHg
Wind8.1 mph SE
Humidity54%
Visibility—
Dew point43°
Thu, 2966° / 54°0.15Light rain
66 °Light rain

Williston, Thursday, 29 October

Light rain. High 66°, low 54°.

Pressure30.15 inHg
Wind10.6 mph S
Humidity91%
Visibility—
Dew point59°
Fri, 3077° / 63°0.06Light rain
77 °Light rain

Williston, Friday, 30 October

Light rain. High 77°, low 63°.

Pressure30.00 inHg
Wind7.3 mph SW
Humidity73%
Visibility—
Dew point61°
Sat, 3179° / 61°0Mostly clear
79 °Mostly clear

Williston, Saturday, 31 October

Mostly clear. High 79°, low 61°.

Pressure30.06 inHg
Wind9.1 mph S
Humidity65%
Visibility—
Dew point58°
Sun, 0171° / 61°0.05Light rain
71 °Light rain

Williston, Sunday, 1 November

Light rain. High 71°, low 61°.

Pressure30.03 inHg
Wind11.1 mph S
Humidity85%
Visibility—
Dew point66°
Mon, 0261° / 49°0Overcast
61 °Overcast

Williston, Monday, 2 November

Overcast. High 61°, low 49°.

Pressure30.36 inHg
Wind11.6 mph N
Humidity54%
Visibility—
Dew point39°

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.