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As of 00:48 EDT

Weather in Portland, MI

61°Current weather

Portland, Sunday, 9 August, 00:48

Clear. Feels like 61°. High 83°, low 60°.

Pressure30.00 inHg
Wind6 mph W
Humidity87%
Visibility6.2 mi
Dew point56°
Mon, 1088° / 69°0.15Rain
88 °Rain

Portland, Monday, 10 August

Rain. High 88°, low 69°.

Pressure29.91 inHg
Wind5.2 mph W
Humidity72%
Visibility6.2 mi
Dew point68°
Tue, 1177° / 65°1.18Heavy rain
77 °Heavy rain

Portland, Tuesday, 11 August

Heavy rain. High 77°, low 65°.

Pressure29.77 inHg
Wind8.3 mph S
Humidity96%
Visibility0.3 mi
Dew point70°
Wed, 1281° / 61°0.02Light rain
81 °Light rain

Portland, Wednesday, 12 August

Light rain. High 81°, low 61°.

Pressure29.80 inHg
Wind5.8 mph NW
Humidity64%
Visibility6.2 mi
Dew point63°
Thu, 1372° / 54°0Overcast
72 °Overcast

Portland, Thursday, 13 August

Overcast. High 72°, low 54°.

Pressure30.03 inHg
Wind8.7 mph NW
Humidity42%
Visibility—
Dew point45°
Fri, 1480° / 53°0Clear
80 °Clear

Portland, Friday, 14 August

Clear. High 80°, low 53°.

Pressure30.09 inHg
Wind10.7 mph NW
Humidity39%
Visibility—
Dew point48°
Sat, 1576° / 53°0Overcast
76 °Overcast

Portland, Saturday, 15 August

Overcast. High 76°, low 53°.

Pressure30.27 inHg
Wind6.6 mph NE
Humidity40%
Visibility—
Dew point46°
Sun, 1679° / 57°0Partly cloudy
79 °Partly cloudy

Portland, Sunday, 16 August

Partly cloudy. High 79°, low 57°.

Pressure30.12 inHg
Wind7.2 mph W
Humidity41%
Visibility—
Dew point50°
Mon, 1782° / 62°0Partly cloudy
82 °Partly cloudy

Portland, Monday, 17 August

Partly cloudy. High 82°, low 62°.

Pressure30.00 inHg
Wind7.2 mph W
Humidity49%
Visibility—
Dew point58°
Tue, 1885° / 62°0Overcast
85 °Overcast

Portland, Tuesday, 18 August

Overcast. High 85°, low 62°.

Pressure29.97 inHg
Wind12.5 mph SW
Humidity41%
Visibility—
Dew point56°
Wed, 1974° / 62°0.05Light rain
74 °Light rain

Portland, Wednesday, 19 August

Light rain. High 74°, low 62°.

Pressure29.83 inHg
Wind20.8 mph NW
Humidity72%
Visibility—
Dew point60°
Thu, 2077° / 57°0Overcast
77 °Overcast

Portland, Thursday, 20 August

Overcast. High 77°, low 57°.

Pressure29.94 inHg
Wind18.1 mph NW
Humidity42%
Visibility—
Dew point49°
Fri, 2176° / 48°0Clear
76 °Clear

Portland, Friday, 21 August

Clear. High 76°, low 48°.

Pressure30.06 inHg
Wind8.7 mph E
Humidity27%
Visibility—
Dew point35°
Sat, 2277° / 52°0.02Light rain
77 °Light rain

Portland, Saturday, 22 August

Light rain. High 77°, low 52°.

Pressure29.94 inHg
Wind12.2 mph SE
Humidity32%
Visibility—
Dew point42°
Sun, 2385° / 62°0Light rain
85 °Light rain

Portland, Sunday, 23 August

Light rain. High 85°, low 62°.

Pressure29.80 inHg
Wind23 mph W
Humidity28%
Visibility—
Dew point45°
Mon, 2481° / 56°0Overcast
81 °Overcast

Portland, Monday, 24 August

Overcast. High 81°, low 56°.

Pressure30.00 inHg
Wind10.3 mph NW
Humidity36%
Visibility—
Dew point49°

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 Portland, MI 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 Portland, MI 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.