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As of 20:27 CDT

Weather in Altmar, IL

58°Current weather

Altmar, Thursday, 8 October, 20:27

Clear. Feels like 57°. High 75°, low 49°.

Pressure30.09 inHg
Wind3.7 mph NE
Humidity84%
Visibility6.2 mi
Dew point52°
Fri, 0976° / 53°0.03Light rain
76 °Light rain

Altmar, Friday, 9 October

Light rain. High 76°, low 53°.

Pressure30.12 inHg
Wind6.5 mph S
Humidity50%
Visibility6.2 mi
Dew point53°
Sat, 1080° / 58°0Overcast
80 °Overcast

Altmar, Saturday, 10 October

Overcast. High 80°, low 58°.

Pressure30.09 inHg
Wind8.2 mph S
Humidity52%
Visibility6.2 mi
Dew point55°
Sun, 1173° / 56°0Mostly clear
73 °Mostly clear

Altmar, Sunday, 11 October

Mostly clear. High 73°, low 56°.

Pressure29.94 inHg
Wind2.8 mph NE
Humidity67%
Visibility6.2 mi
Dew point57°
Mon, 1284° / 59°0Clear
84 °Clear

Altmar, Monday, 12 October

Clear. High 84°, low 59°.

Pressure29.83 inHg
Wind10.5 mph SW
Humidity52%
Visibility6.2 mi
Dew point60°
Tue, 1379° / 62°0Mostly clear
79 °Mostly clear

Altmar, Tuesday, 13 October

Mostly clear. High 79°, low 62°.

Pressure29.83 inHg
Wind10.7 mph SW
Humidity66%
Visibility—
Dew point65°
Wed, 1470° / 58°0.02Light rain
70 °Light rain

Altmar, Wednesday, 14 October

Light rain. High 70°, low 58°.

Pressure30.06 inHg
Wind12.9 mph E
Humidity56%
Visibility—
Dew point49°
Thu, 1581° / 60°0.36Rain
81 °Rain

Altmar, Thursday, 15 October

Rain. High 81°, low 60°.

Pressure29.77 inHg
Wind17.2 mph SW
Humidity63%
Visibility—
Dew point64°
Fri, 1666° / 50°0Overcast
66 °Overcast

Altmar, Friday, 16 October

Overcast. High 66°, low 50°.

Pressure30.12 inHg
Wind14.9 mph NW
Humidity63%
Visibility—
Dew point44°
Sat, 1751° / 41°0Clear
51 °Clear

Altmar, Saturday, 17 October

Clear. High 51°, low 41°.

Pressure30.47 inHg
Wind15.3 mph N
Humidity44%
Visibility—
Dew point28°
Sun, 1853° / 38°0Overcast
53 °Overcast

Altmar, Sunday, 18 October

Overcast. High 53°, low 38°.

Pressure30.50 inHg
Wind4.5 mph E
Humidity41%
Visibility—
Dew point27°
Mon, 1957° / 40°0Overcast
57 °Overcast

Altmar, Monday, 19 October

Overcast. High 57°, low 40°.

Pressure30.50 inHg
Wind7 mph E
Humidity40%
Visibility—
Dew point29°
Tue, 2053° / 48°0Overcast
53 °Overcast

Altmar, Tuesday, 20 October

Overcast. High 53°, low 48°.

Pressure30.33 inHg
Wind7.3 mph S
Humidity63%
Visibility—
Dew point39°
Wed, 2167° / 46°0Clear
67 °Clear

Altmar, Wednesday, 21 October

Clear. High 67°, low 46°.

Pressure30.18 inHg
Wind9.8 mph SW
Humidity58%
Visibility—
Dew point46°
Thu, 2265° / 52°0Clear
65 °Clear

Altmar, Thursday, 22 October

Clear. High 65°, low 52°.

Pressure30.18 inHg
Wind9.6 mph N
Humidity54%
Visibility—
Dew point46°
Fri, 2358° / 46°0Clear
58 °Clear

Altmar, Friday, 23 October

Clear. High 58°, low 46°.

Pressure30.30 inHg
Wind12.1 mph NE
Humidity49%
Visibility—
Dew point38°

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 Altmar, 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 Altmar, 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.