As of 23:48 CST

Weather in Marietta, IL

36°

Marietta, Saturday, 7 November, 23:48

Clear. Feels like 30°. High 53°, low 30°.

Pressure30.15 inHg

Wind7.1 mph SW

Humidity90%

Visibility6.2 mi

Dew point33°

See detailed hourly forecast

Sun, 0862° / 35°

62 °

Marietta, Sunday, 8 November

Clear. High 62°, low 35°.

Pressure30.09 inHg

Wind8.6 mph W

Humidity59%

Visibility6.2 mi

Dew point45°

Mon, 0963° / 35°

63 °

Marietta, Monday, 9 November

Clear. High 63°, low 35°.

Pressure30.15 inHg

Wind8.2 mph SW

Humidity45%

Visibility6.2 mi

Dew point40°

Tue, 1063° / 43°

63 °

Marietta, Tuesday, 10 November

Clear. High 63°, low 43°.

Pressure30.09 inHg

Wind3.7 mph N

Humidity51%

Visibility6.2 mi

Dew point44°

Wed, 1158° / 42°

0.16

58 °

Marietta, Wednesday, 11 November

Rain. High 58°, low 42°.

Pressure29.85 inHg

Wind2 mph E

Humidity74%

Visibility6.2 mi

Dew point50°

Thu, 1247° / 40°

47 °

Marietta, Thursday, 12 November

Clear. High 47°, low 40°.

Pressure29.97 inHg

Wind15.3 mph N

Humidity52%

Visibility—

Dew point29°

Fri, 1342° / 31°

42 °

Marietta, Friday, 13 November

Overcast. High 42°, low 31°.

Pressure30.12 inHg

Wind10.9 mph N

Humidity57%

Visibility—

Dew point26°

Sat, 1445° / 27°

45 °

Marietta, Saturday, 14 November

Clear. High 45°, low 27°.

Pressure30.12 inHg

Wind8.9 mph NW

Humidity40%

Visibility—

Dew point18°

Sun, 1559° / 33°

59 °

Marietta, Sunday, 15 November

Clear. High 59°, low 33°.

Pressure30.06 inHg

Wind12.1 mph SW

Humidity44%

Visibility—

Dew point31°

Mon, 1664° / 44°

64 °

Marietta, Monday, 16 November

Overcast. High 64°, low 44°.

Pressure30.06 inHg

Wind8.5 mph SE

Humidity54%

Visibility—

Dew point42°

Tue, 1766° / 54°

0.17

66 °

Marietta, Tuesday, 17 November

Rain. High 66°, low 54°.

Pressure30.00 inHg

Wind13.2 mph S

Humidity61%

Visibility—

Dew point48°

Wed, 1860° / 50°

0.29

60 °

Marietta, Wednesday, 18 November

Rain. High 60°, low 50°.

Pressure29.83 inHg

Wind15.6 mph S

Humidity55%

Visibility—

Dew point44°

Thu, 1961° / 45°

0.07

61 °

Marietta, Thursday, 19 November

Light rain. High 61°, low 45°.

Pressure29.94 inHg

Wind14.4 mph S

Humidity44%

Visibility—

Dew point37°

Fri, 2065° / 52°

0.13

65 °

Marietta, Friday, 20 November

Light rain. High 65°, low 52°.

Pressure29.74 inHg

Wind18.8 mph SW

Humidity73%

Visibility—

Dew point55°

Sat, 2164° / 46°

64 °

Marietta, Saturday, 21 November

Clear. High 64°, low 46°.

Pressure29.80 inHg

Wind15.5 mph SW

Humidity41%

Visibility—

Dew point37°

Sun, 2245° / 40°

45 °

Marietta, Sunday, 22 November

Overcast. High 45°, low 40°.

Pressure29.91 inHg

Wind17.1 mph NW

Humidity53%

Visibility—

Dew point29°

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 Marietta, IL 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 Marietta, IL 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.