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As of 21:09 EDT

Weather in Williston, MD

48°Current weather

Williston, Saturday, 17 October, 21:09

Clear. Feels like 44°. High 62°, low 47°.

Pressure30.36 inHg
Wind10.4 mph N
Humidity53%
Visibility6.2 mi
Dew point33°
Sun, 1861° / 42°0Clear
61 °Clear

Williston, Sunday, 18 October

Clear. High 61°, low 42°.

Pressure30.53 inHg
Wind9.9 mph NE
Humidity43%
Visibility6.2 mi
Dew point32°
Mon, 1964° / 47°0Overcast
64 °Overcast

Williston, Monday, 19 October

Overcast. High 64°, low 47°.

Pressure30.33 inHg
Wind11.7 mph N
Humidity51%
Visibility6.2 mi
Dew point41°
Tue, 2066° / 50°0Clear
66 °Clear

Williston, Tuesday, 20 October

Clear. High 66°, low 50°.

Pressure30.24 inHg
Wind10.9 mph N
Humidity57%
Visibility6.2 mi
Dew point47°
Wed, 2160° / 46°0Clear
60 °Clear

Williston, Wednesday, 21 October

Clear. High 60°, low 46°.

Pressure30.27 inHg
Wind9.1 mph N
Humidity57%
Visibility6.2 mi
Dew point41°
Thu, 2263° / 43°0Clear
63 °Clear

Williston, Thursday, 22 October

Clear. High 63°, low 43°.

Pressure30.18 inHg
Wind7.4 mph N
Humidity72%
Visibility—
Dew point45°
Fri, 2363° / 45°0Overcast
63 °Overcast

Williston, Friday, 23 October

Overcast. High 63°, low 45°.

Pressure30.27 inHg
Wind10.7 mph NE
Humidity54%
Visibility—
Dew point39°
Sat, 2465° / 46°0Clear
65 °Clear

Williston, Saturday, 24 October

Clear. High 65°, low 46°.

Pressure30.50 inHg
Wind8.7 mph E
Humidity53%
Visibility—
Dew point42°
Sun, 2565° / 48°0Overcast
65 °Overcast

Williston, Sunday, 25 October

Overcast. High 65°, low 48°.

Pressure30.50 inHg
Wind6.2 mph SE
Humidity55%
Visibility—
Dew point43°
Mon, 2670° / 48°0Mostly clear
70 °Mostly clear

Williston, Monday, 26 October

Mostly clear. High 70°, low 48°.

Pressure30.27 inHg
Wind9.3 mph SW
Humidity55%
Visibility—
Dew point45°
Tue, 2767° / 50°0.05Light rain
67 °Light rain

Williston, Tuesday, 27 October

Light rain. High 67°, low 50°.

Pressure30.06 inHg
Wind13.1 mph N
Humidity55%
Visibility—
Dew point48°
Wed, 2852° / 39°0Clear
52 °Clear

Williston, Wednesday, 28 October

Clear. High 52°, low 39°.

Pressure30.33 inHg
Wind15.7 mph N
Humidity37%
Visibility—
Dew point22°
Thu, 2958° / 35°0Clear
58 °Clear

Williston, Thursday, 29 October

Clear. High 58°, low 35°.

Pressure30.33 inHg
Wind6.2 mph N
Humidity36%
Visibility—
Dew point22°
Fri, 3066° / 42°0Overcast
66 °Overcast

Williston, Friday, 30 October

Overcast. High 66°, low 42°.

Pressure30.27 inHg
Wind6.4 mph SW
Humidity39%
Visibility—
Dew point31°
Sat, 3170° / 51°0Overcast
70 °Overcast

Williston, Saturday, 31 October

Overcast. High 70°, low 51°.

Pressure30.30 inHg
Wind11.2 mph S
Humidity43%
Visibility—
Dew point41°
Sun, 0174° / 56°0Overcast
74 °Overcast

Williston, Sunday, 1 November

Overcast. High 74°, low 56°.

Pressure30.27 inHg
Wind11.8 mph NW
Humidity56%
Visibility—
Dew point53°

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.