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As of 16:03 PDT

Weather in Mount Vernon, WA

79°Current weather

Mount Vernon, Saturday, 8 August, 16:03

Overcast. Feels like 79°. High 79°, low 58°.

Pressure30.06 inHg
Wind2 mph NW
Humidity38%
Visibility6.2 mi
Dew point53°
Sun, 0976° / 52°0Overcast
76 °Overcast

Mount Vernon, Sunday, 9 August

Overcast. High 76°, low 52°.

Pressure30.06 inHg
Wind5.3 mph W
Humidity53%
Visibility6.2 mi
Dew point51°
Mon, 1072° / 52°0Clear
72 °Clear

Mount Vernon, Monday, 10 August

Clear. High 72°, low 52°.

Pressure30.09 inHg
Wind5.4 mph W
Humidity55%
Visibility6.2 mi
Dew point52°
Tue, 1173° / 53°0Mostly clear
73 °Mostly clear

Mount Vernon, Tuesday, 11 August

Mostly clear. High 73°, low 53°.

Pressure30.12 inHg
Wind5.3 mph W
Humidity63%
Visibility6.2 mi
Dew point55°
Wed, 1269° / 56°0Light rain
69 °Light rain

Mount Vernon, Wednesday, 12 August

Light rain. High 69°, low 56°.

Pressure30.06 inHg
Wind3.2 mph W
Humidity77%
Visibility6.2 mi
Dew point57°
Thu, 1372° / 53°0Overcast
72 °Overcast

Mount Vernon, Thursday, 13 August

Overcast. High 72°, low 53°.

Pressure30.03 inHg
Wind6.3 mph W
Humidity62%
Visibility—
Dew point54°
Fri, 1474° / 53°0Overcast
74 °Overcast

Mount Vernon, Friday, 14 August

Overcast. High 74°, low 53°.

Pressure30.00 inHg
Wind7.7 mph W
Humidity53%
Visibility—
Dew point54°
Sat, 1577° / 56°0Overcast
77 °Overcast

Mount Vernon, Saturday, 15 August

Overcast. High 77°, low 56°.

Pressure30.00 inHg
Wind3.8 mph SW
Humidity49%
Visibility—
Dew point54°
Sun, 1675° / 56°0Clear
75 °Clear

Mount Vernon, Sunday, 16 August

Clear. High 75°, low 56°.

Pressure30.06 inHg
Wind6.6 mph W
Humidity49%
Visibility—
Dew point53°
Mon, 1776° / 56°0Overcast
76 °Overcast

Mount Vernon, Monday, 17 August

Overcast. High 76°, low 56°.

Pressure30.03 inHg
Wind6.2 mph W
Humidity46%
Visibility—
Dew point52°
Tue, 1877° / 56°0Overcast
77 °Overcast

Mount Vernon, Tuesday, 18 August

Overcast. High 77°, low 56°.

Pressure30.06 inHg
Wind7.4 mph SW
Humidity42%
Visibility—
Dew point50°
Wed, 1965° / 58°0.01Light rain
65 °Light rain

Mount Vernon, Wednesday, 19 August

Light rain. High 65°, low 58°.

Pressure30.09 inHg
Wind4.7 mph NW
Humidity78%
Visibility—
Dew point58°
Thu, 2074° / 57°0Overcast
74 °Overcast

Mount Vernon, Thursday, 20 August

Overcast. High 74°, low 57°.

Pressure30.03 inHg
Wind5.8 mph W
Humidity58%
Visibility—
Dew point56°
Fri, 2177° / 57°0Mostly clear
77 °Mostly clear

Mount Vernon, Friday, 21 August

Mostly clear. High 77°, low 57°.

Pressure30.06 inHg
Wind7.6 mph W
Humidity49%
Visibility—
Dew point55°
Sat, 2274° / 56°0Overcast
74 °Overcast

Mount Vernon, Saturday, 22 August

Overcast. High 74°, low 56°.

Pressure30.03 inHg
Wind6.8 mph W
Humidity58%
Visibility—
Dew point56°
Sun, 2376° / 56°0Overcast
76 °Overcast

Mount Vernon, Sunday, 23 August

Overcast. High 76°, low 56°.

Pressure29.94 inHg
Wind6.2 mph W
Humidity51%
Visibility—
Dew point55°

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 Mount Vernon, WA 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 Mount Vernon, WA 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.