As of 19:08 CDT

Weather in Boulder, IL

76°

Boulder, Friday, 9 October, 19:08

Clear. Feels like 75°. High 87°, low 53°.

Pressure30.03 inHg

Wind6.2 mph SE

Humidity38%

Visibility6.2 mi

Dew point49°

See detailed hourly forecast

Sat, 1078° / 56°

0.01

78 °

Boulder, Saturday, 10 October

Light rain. High 78°, low 56°.

Pressure30.06 inHg

Wind4.7 mph E

Humidity57%

Visibility6.2 mi

Dew point54°

Sun, 1180° / 54°

80 °

Boulder, Sunday, 11 October

Clear. High 80°, low 54°.

Pressure29.97 inHg

Wind3.5 mph NW

Humidity60%

Visibility6.2 mi

Dew point59°

Mon, 1287° / 64°

87 °

Boulder, Monday, 12 October

Mostly clear. High 87°, low 64°.

Pressure29.91 inHg

Wind9.9 mph SW

Humidity46%

Visibility6.2 mi

Dew point59°

Tue, 1389° / 70°

89 °

Boulder, Tuesday, 13 October

Clear. High 89°, low 70°.

Pressure29.88 inHg

Wind8.7 mph SW

Humidity62%

Visibility6.2 mi

Dew point69°

Wed, 1474° / 69°

0.58

74 °

Boulder, Wednesday, 14 October

Rain. High 74°, low 69°.

Pressure30.00 inHg

Wind10.2 mph NE

Humidity93%

Visibility—

Dew point72°

Thu, 1590° / 64°

0.13

90 °

Boulder, Thursday, 15 October

Light rain. High 90°, low 64°.

Pressure29.91 inHg

Wind19.3 mph SW

Humidity44%

Visibility—

Dew point62°

Fri, 1671° / 53°

0.03

71 °

Boulder, Friday, 16 October

Light rain. High 71°, low 53°.

Pressure30.12 inHg

Wind19.3 mph W

Humidity29%

Visibility—

Dew point29°

Sat, 1749° / 38°

49 °

Boulder, Saturday, 17 October

Overcast. High 49°, low 38°.

Pressure30.39 inHg

Wind20 mph NW

Humidity42%

Visibility—

Dew point25°

Sun, 1856° / 35°

56 °

Boulder, Sunday, 18 October

Partly cloudy. High 56°, low 35°.

Pressure30.47 inHg

Wind6.3 mph N

Humidity31%

Visibility—

Dew point22°

Mon, 1962° / 40°

62 °

Boulder, Monday, 19 October

Overcast. High 62°, low 40°.

Pressure30.42 inHg

Wind7.3 mph SE

Humidity25%

Visibility—

Dew point22°

Tue, 2069° / 43°

69 °

Boulder, Tuesday, 20 October

Clear. High 69°, low 43°.

Pressure30.39 inHg

Wind6.4 mph SE

Humidity22%

Visibility—

Dew point24°

Wed, 2173° / 46°

73 °

Boulder, Wednesday, 21 October

Clear. High 73°, low 46°.

Pressure30.33 inHg

Wind6.8 mph S

Humidity22%

Visibility—

Dew point27°

Thu, 2277° / 49°

77 °

Boulder, Thursday, 22 October

Clear. High 77°, low 49°.

Pressure30.15 inHg

Wind8.7 mph W

Humidity26%

Visibility—

Dew point34°

Fri, 2378° / 52°

78 °

Boulder, Friday, 23 October

Clear. High 78°, low 52°.

Pressure30.06 inHg

Wind8.3 mph S

Humidity27%

Visibility—

Dew point37°

Sat, 2480° / 54°

80 °

Boulder, Saturday, 24 October

Overcast. High 80°, low 54°.

Pressure30.06 inHg

Wind11.4 mph SW

Humidity20%

Visibility—

Dew point31°

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 Boulder, 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 Boulder, 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.