As of 10:34 EDT

Weather in Old Mission, MI

71°

Old Mission, Sunday, 9 August, 10:34

Overcast. Feels like 72°. High 76°, low 61°.

Pressure29.97 inHg

Wind10.1 mph SW

Humidity87%

Visibility6.2 mi

Dew point67°

See detailed hourly forecast

Mon, 1075° / 67°

0.11

75 °

Old Mission, Monday, 10 August

Rain. High 75°, low 67°.

Pressure29.88 inHg

Wind10.8 mph N

Humidity78%

Visibility6.2 mi

Dew point63°

Tue, 1176° / 65°

76 °

Old Mission, Tuesday, 11 August

Overcast. High 76°, low 65°.

Pressure29.94 inHg

Wind4.3 mph SW

Humidity51%

Visibility6.2 mi

Dew point56°

Wed, 1273° / 65°

0.01

73 °

Old Mission, Wednesday, 12 August

Light rain. High 73°, low 65°.

Pressure29.80 inHg

Wind12.3 mph NW

Humidity79%

Visibility6.2 mi

Dew point63°

Thu, 1367° / 63°

67 °

Old Mission, Thursday, 13 August

Overcast. High 67°, low 63°.

Pressure30.06 inHg

Wind12.9 mph NW

Humidity57%

Visibility—

Dew point49°

Fri, 1469° / 59°

69 °

Old Mission, Friday, 14 August

Clear. High 69°, low 59°.

Pressure30.21 inHg

Wind11.6 mph N

Humidity55%

Visibility—

Dew point50°

Sat, 1572° / 60°

72 °

Old Mission, Saturday, 15 August

Overcast. High 72°, low 60°.

Pressure30.30 inHg

Wind11 mph N

Humidity50%

Visibility—

Dew point50°

Sun, 1668° / 60°

0.41

68 °

Old Mission, Sunday, 16 August

Rain. High 68°, low 60°.

Pressure30.03 inHg

Wind13.8 mph SE

Humidity68%

Visibility—

Dew point56°

Mon, 1774° / 64°

0.02

74 °

Old Mission, Monday, 17 August

Light rain. High 74°, low 64°.

Pressure30.03 inHg

Wind8.7 mph NW

Humidity60%

Visibility—

Dew point57°

Tue, 1874° / 65°

74 °

Old Mission, Tuesday, 18 August

Overcast. High 74°, low 65°.

Pressure29.85 inHg

Wind17.3 mph SW

Humidity67%

Visibility—

Dew point58°

Wed, 1968° / 64°

0.45

68 °

Old Mission, Wednesday, 19 August

Rain. High 68°, low 64°.

Pressure29.74 inHg

Wind21.8 mph N

Humidity83%

Visibility—

Dew point60°

Thu, 2067° / 60°

67 °

Old Mission, Thursday, 20 August

Overcast. High 67°, low 60°.

Pressure29.94 inHg

Wind11.2 mph N

Humidity53%

Visibility—

Dew point48°

Fri, 2170° / 60°

0.17

70 °

Old Mission, Friday, 21 August

Light rain. High 70°, low 60°.

Pressure29.80 inHg

Wind17.6 mph S

Humidity88%

Visibility—

Dew point61°

Sat, 2267° / 66°

0.54

67 °

Old Mission, Saturday, 22 August

Rain. High 67°, low 66°.

Pressure29.71 inHg

Wind21.2 mph N

Humidity87%

Visibility—

Dew point63°

Sun, 2368° / 64°

0.04

68 °

Old Mission, Sunday, 23 August

Light rain. High 68°, low 64°.

Pressure30.09 inHg

Wind16.6 mph N

Humidity54%

Visibility—

Dew point50°

Mon, 2475° / 60°

75 °

Old Mission, Monday, 24 August

Mostly clear. High 75°, low 60°.

Pressure30.18 inHg

Wind12.8 mph SW

Humidity50%

Visibility—

Dew point52°

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 Old Mission, 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 Old Mission, 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.