As of 01:43 CST

Weather in Saint Mary, IL

47°

Saint Mary, Friday, 6 November, 01:43

Overcast. Feels like 44°. High 48°, low 35°.

Pressure30.09 inHg

Wind7.6 mph N

Humidity81%

Visibility6.2 mi

Dew point42°

See detailed hourly forecast

Sat, 0753° / 32°

53 °

Saint Mary, Saturday, 7 November

Overcast. High 53°, low 32°.

Pressure30.27 inHg

Wind3.5 mph W

Humidity49%

Visibility6.2 mi

Dew point32°

Sun, 0862° / 41°

62 °

Saint Mary, Sunday, 8 November

Clear. High 62°, low 41°.

Pressure30.15 inHg

Wind7.4 mph W

Humidity61%

Visibility6.2 mi

Dew point46°

Mon, 0965° / 37°

65 °

Saint Mary, Monday, 9 November

Clear. High 65°, low 37°.

Pressure30.15 inHg

Wind7.5 mph SW

Humidity64%

Visibility6.2 mi

Dew point51°

Tue, 1064° / 45°

64 °

Saint Mary, Tuesday, 10 November

Clear. High 64°, low 45°.

Pressure30.06 inHg

Wind7.4 mph SW

Humidity63%

Visibility—

Dew point47°

Wed, 1160° / 41°

60 °

Saint Mary, Wednesday, 11 November

Mostly clear. High 60°, low 41°.

Pressure30.03 inHg

Wind6.6 mph NW

Humidity48%

Visibility—

Dew point38°

Thu, 1249° / 35°

49 °

Saint Mary, Thursday, 12 November

Overcast. High 49°, low 35°.

Pressure30.12 inHg

Wind7 mph N

Humidity51%

Visibility—

Dew point29°

Fri, 1347° / 35°

47 °

Saint Mary, Friday, 13 November

Overcast. High 47°, low 35°.

Pressure30.03 inHg

Wind10.2 mph N

Humidity46%

Visibility—

Dew point25°

Sat, 1445° / 29°

45 °

Saint Mary, Saturday, 14 November

Clear. High 45°, low 29°.

Pressure30.30 inHg

Wind6.3 mph NE

Humidity36%

Visibility—

Dew point16°

Sun, 1555° / 32°

55 °

Saint Mary, Sunday, 15 November

Clear. High 55°, low 32°.

Pressure30.33 inHg

Wind9.6 mph S

Humidity30%

Visibility—

Dew point18°

Mon, 1664° / 44°

64 °

Saint Mary, Monday, 16 November

Clear. High 64°, low 44°.

Pressure30.33 inHg

Wind13.5 mph W

Humidity49%

Visibility—

Dew point41°

Tue, 1763° / 46°

63 °

Saint Mary, Tuesday, 17 November

Overcast. High 63°, low 46°.

Pressure30.27 inHg

Wind15.3 mph S

Humidity38%

Visibility—

Dew point34°

Wed, 1863° / 51°

63 °

Saint Mary, Wednesday, 18 November

Overcast. High 63°, low 51°.

Pressure30.03 inHg

Wind18.4 mph SW

Humidity50%

Visibility—

Dew point41°

Thu, 1953° / 41°

53 °

Saint Mary, Thursday, 19 November

Overcast. High 53°, low 41°.

Pressure30.24 inHg

Wind6.8 mph NW

Humidity52%

Visibility—

Dew point34°

Fri, 2052° / 44°

0.14

52 °

Saint Mary, Friday, 20 November

Light rain. High 52°, low 44°.

Pressure29.97 inHg

Wind8.1 mph E

Humidity87%

Visibility—

Dew point45°

Sat, 2148° / 43°

48 °

Saint Mary, Saturday, 21 November

Overcast. High 48°, low 43°.

Pressure29.68 inHg

Wind14.2 mph N

Humidity80%

Visibility—

Dew point41°

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 Saint Mary, 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 Saint Mary, 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.