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As of 15:49 EDT

Weather in Williston, MD

79°Current weather

Williston, Tuesday, 13 October, 15:49

Clear. Feels like 79°. High 80°, low 56°.

Pressure29.94 inHg
Wind9.2 mph SW
Humidity57%
Visibility6.2 mi
Dew point63°
Wed, 1481° / 64°0.04Light rain
81 °Light rain

Williston, Wednesday, 14 October

Light rain. High 81°, low 64°.

Pressure29.97 inHg
Wind9.1 mph W
Humidity60%
Visibility6.2 mi
Dew point65°
Thu, 1570° / 60°0.02Light rain
70 °Light rain

Williston, Thursday, 15 October

Light rain. High 70°, low 60°.

Pressure30.21 inHg
Wind7.7 mph NE
Humidity60%
Visibility6.2 mi
Dew point53°
Fri, 1683° / 60°0.34Rain
83 °Rain

Williston, Friday, 16 October

Rain. High 83°, low 60°.

Pressure29.74 inHg
Wind14.9 mph SW
Humidity69%
Visibility6.2 mi
Dew point67°
Sat, 1758° / 47°0.05Light rain
58 °Light rain

Williston, Saturday, 17 October

Light rain. High 58°, low 47°.

Pressure30.18 inHg
Wind18.3 mph NW
Humidity46%
Visibility6.2 mi
Dew point34°
Sun, 1857° / 42°0Clear
57 °Clear

Williston, Sunday, 18 October

Clear. High 57°, low 42°.

Pressure30.56 inHg
Wind5.7 mph S
Humidity49%
Visibility—
Dew point33°
Mon, 1968° / 45°0Mostly clear
68 °Mostly clear

Williston, Monday, 19 October

Mostly clear. High 68°, low 45°.

Pressure30.45 inHg
Wind13.4 mph SW
Humidity55%
Visibility—
Dew point45°
Tue, 2073° / 56°0Overcast
73 °Overcast

Williston, Tuesday, 20 October

Overcast. High 73°, low 56°.

Pressure30.39 inHg
Wind7.5 mph NW
Humidity64%
Visibility—
Dew point54°
Wed, 2169° / 54°0Overcast
69 °Overcast

Williston, Wednesday, 21 October

Overcast. High 69°, low 54°.

Pressure30.39 inHg
Wind9.8 mph E
Humidity72%
Visibility—
Dew point52°
Thu, 2269° / 50°0Clear
69 °Clear

Williston, Thursday, 22 October

Clear. High 69°, low 50°.

Pressure30.45 inHg
Wind9.8 mph E
Humidity56%
Visibility—
Dew point46°
Fri, 2372° / 51°0Clear
72 °Clear

Williston, Friday, 23 October

Clear. High 72°, low 51°.

Pressure30.39 inHg
Wind8.8 mph SW
Humidity63%
Visibility—
Dew point50°
Sat, 2477° / 56°0Mostly clear
77 °Mostly clear

Williston, Saturday, 24 October

Mostly clear. High 77°, low 56°.

Pressure30.21 inHg
Wind8.7 mph W
Humidity56%
Visibility—
Dew point52°
Sun, 2567° / 53°0Clear
67 °Clear

Williston, Sunday, 25 October

Clear. High 67°, low 53°.

Pressure30.12 inHg
Wind12.3 mph NW
Humidity38%
Visibility—
Dew point38°
Mon, 2663° / 45°0Mostly clear
63 °Mostly clear

Williston, Monday, 26 October

Mostly clear. High 63°, low 45°.

Pressure30.00 inHg
Wind14 mph NW
Humidity43%
Visibility—
Dew point34°
Tue, 2759° / 43°0Clear
59 °Clear

Williston, Tuesday, 27 October

Clear. High 59°, low 43°.

Pressure30.21 inHg
Wind12.5 mph NW
Humidity51%
Visibility—
Dew point36°
Wed, 2859° / 39°0Overcast
59 °Overcast

Williston, Wednesday, 28 October

Overcast. High 59°, low 39°.

Pressure30.45 inHg
Wind6.4 mph SE
Humidity38%
Visibility—
Dew point26°

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.