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As of 03:27 CDT

Weather in Port Arthur, WI

63°Current weather

Port Arthur, Sunday, 9 August, 03:27

Clear. Feels like 63°. High 80°, low 62°.

Pressure29.94 inHg
Wind5.8 mph SW
Humidity90%
Visibility6.2 mi
Dew point59°
Mon, 1088° / 65°0.01Light rain
88 °Light rain

Port Arthur, Monday, 10 August

Light rain. High 88°, low 65°.

Pressure29.91 inHg
Wind5.2 mph NE
Humidity36%
Visibility6.2 mi
Dew point52°
Tue, 1188° / 61°0.13Rain
88 °Rain

Port Arthur, Tuesday, 11 August

Rain. High 88°, low 61°.

Pressure29.80 inHg
Wind4.9 mph NW
Humidity52%
Visibility6.2 mi
Dew point64°
Wed, 1282° / 56°0Clear
82 °Clear

Port Arthur, Wednesday, 12 August

Clear. High 82°, low 56°.

Pressure29.88 inHg
Wind11.3 mph NW
Humidity29%
Visibility6.2 mi
Dew point45°
Thu, 1376° / 51°0Overcast
76 °Overcast

Port Arthur, Thursday, 13 August

Overcast. High 76°, low 51°.

Pressure30.06 inHg
Wind7.6 mph N
Humidity32%
Visibility—
Dew point39°
Fri, 1482° / 49°0Mostly clear
82 °Mostly clear

Port Arthur, Friday, 14 August

Mostly clear. High 82°, low 49°.

Pressure30.18 inHg
Wind5.6 mph NE
Humidity28%
Visibility—
Dew point41°
Sat, 1579° / 55°0Overcast
79 °Overcast

Port Arthur, Saturday, 15 August

Overcast. High 79°, low 55°.

Pressure30.21 inHg
Wind11 mph S
Humidity29%
Visibility—
Dew point41°
Sun, 1686° / 60°0Light rain
86 °Light rain

Port Arthur, Sunday, 16 August

Light rain. High 86°, low 60°.

Pressure30.06 inHg
Wind13.5 mph NW
Humidity45%
Visibility—
Dew point55°
Mon, 1782° / 53°0Overcast
82 °Overcast

Port Arthur, Monday, 17 August

Overcast. High 82°, low 53°.

Pressure30.12 inHg
Wind6.5 mph N
Humidity29%
Visibility—
Dew point41°
Tue, 1885° / 61°0.01Light rain
85 °Light rain

Port Arthur, Tuesday, 18 August

Light rain. High 85°, low 61°.

Pressure29.91 inHg
Wind13.2 mph SW
Humidity57%
Visibility—
Dew point59°
Wed, 1997° / 68°0.31Rain
97 °Rain

Port Arthur, Wednesday, 19 August

Rain. High 97°, low 68°.

Pressure29.80 inHg
Wind10.4 mph S
Humidity47%
Visibility—
Dew point65°
Thu, 2092° / 68°0.33Rain
92 °Rain

Port Arthur, Thursday, 20 August

Rain. High 92°, low 68°.

Pressure29.80 inHg
Wind14 mph NW
Humidity29%
Visibility—
Dew point52°
Fri, 2182° / 58°0Overcast
82 °Overcast

Port Arthur, Friday, 21 August

Overcast. High 82°, low 58°.

Pressure29.97 inHg
Wind10.9 mph N
Humidity37%
Visibility—
Dew point50°
Sat, 2281° / 62°0.09Light rain
81 °Light rain

Port Arthur, Saturday, 22 August

Light rain. High 81°, low 62°.

Pressure29.85 inHg
Wind9.9 mph SE
Humidity56%
Visibility—
Dew point59°
Sun, 2373° / 61°0.04Light rain
73 °Light rain

Port Arthur, Sunday, 23 August

Light rain. High 73°, low 61°.

Pressure29.97 inHg
Wind11.7 mph NE
Humidity62%
Visibility—
Dew point57°
Mon, 2476° / 55°0.04Light rain
76 °Light rain

Port Arthur, Monday, 24 August

Light rain. High 76°, low 55°.

Pressure30.09 inHg
Wind8.3 mph NE
Humidity70%
Visibility—
Dew point58°

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 Port Arthur, WI 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 Port Arthur, WI 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.