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As of 17:16 CDT

Weather in Boulder, IL

89°Current weather

Boulder, Saturday, 8 August, 17:16

Clear. Feels like 99°. High 89°, low 71°.

Pressure30.00 inHg
Wind5 mph SW
Humidity63%
Visibility6.2 mi
Dew point75°
Sun, 0994° / 74°0Partly cloudy
94 °Partly cloudy

Boulder, Sunday, 9 August

Partly cloudy. High 94°, low 74°.

Pressure30.00 inHg
Wind12.8 mph S
Humidity61%
Visibility6.2 mi
Dew point72°
Mon, 1097° / 75°0Mostly clear
97 °Mostly clear

Boulder, Monday, 10 August

Mostly clear. High 97°, low 75°.

Pressure29.97 inHg
Wind14 mph SW
Humidity55%
Visibility6.2 mi
Dew point73°
Tue, 1196° / 76°0Partly cloudy
96 °Partly cloudy

Boulder, Tuesday, 11 August

Partly cloudy. High 96°, low 76°.

Pressure29.91 inHg
Wind12.8 mph SW
Humidity52%
Visibility6.2 mi
Dew point71°
Wed, 1290° / 71°0.2Light rain
90 °Light rain

Boulder, Wednesday, 12 August

Light rain. High 90°, low 71°.

Pressure29.83 inHg
Wind8.7 mph W
Humidity57%
Visibility6.2 mi
Dew point71°
Thu, 1380° / 71°0.51Rain
80 °Rain

Boulder, Thursday, 13 August

Rain. High 80°, low 71°.

Pressure29.88 inHg
Wind6.1 mph SE
Humidity85%
Visibility—
Dew point74°
Fri, 1477° / 63°0.04Light rain
77 °Light rain

Boulder, Friday, 14 August

Light rain. High 77°, low 63°.

Pressure30.15 inHg
Wind11.6 mph NE
Humidity49%
Visibility—
Dew point54°
Sat, 1577° / 56°0Partly cloudy
77 °Partly cloudy

Boulder, Saturday, 15 August

Partly cloudy. High 77°, low 56°.

Pressure30.27 inHg
Wind8.2 mph E
Humidity48%
Visibility—
Dew point52°
Sun, 1680° / 59°0.05Light rain
80 °Light rain

Boulder, Sunday, 16 August

Light rain. High 80°, low 59°.

Pressure30.18 inHg
Wind9.8 mph S
Humidity50%
Visibility—
Dew point57°
Mon, 1793° / 69°0.24Light rain
93 °Light rain

Boulder, Monday, 17 August

Light rain. High 93°, low 69°.

Pressure29.94 inHg
Wind18.5 mph S
Humidity60%
Visibility—
Dew point71°
Tue, 1888° / 73°0Overcast
88 °Overcast

Boulder, Tuesday, 18 August

Overcast. High 88°, low 73°.

Pressure29.97 inHg
Wind9.7 mph N
Humidity61%
Visibility—
Dew point70°
Wed, 1991° / 71°0Overcast
91 °Overcast

Boulder, Wednesday, 19 August

Overcast. High 91°, low 71°.

Pressure29.91 inHg
Wind7.7 mph SE
Humidity58%
Visibility—
Dew point70°
Thu, 2084° / 73°1.48Heavy rain
84 °Heavy rain

Boulder, Thursday, 20 August

Heavy rain. High 84°, low 73°.

Pressure29.85 inHg
Wind9.1 mph NE
Humidity67%
Visibility—
Dew point70°
Fri, 2181° / 70°0.03Light rain
81 °Light rain

Boulder, Friday, 21 August

Light rain. High 81°, low 70°.

Pressure29.91 inHg
Wind10.3 mph NE
Humidity69%
Visibility—
Dew point68°
Sat, 2283° / 65°0Overcast
83 °Overcast

Boulder, Saturday, 22 August

Overcast. High 83°, low 65°.

Pressure29.94 inHg
Wind12.4 mph NE
Humidity57%
Visibility—
Dew point63°
Sun, 2371° / 60°0.03Light rain
71 °Light rain

Boulder, Sunday, 23 August

Light rain. High 71°, low 60°.

Pressure30.12 inHg
Wind13 mph NE
Humidity60%
Visibility—
Dew point55°

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.