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As of 16:42 CDT

Weather in Frederick, IL

88°Current weather

Frederick, Saturday, 8 August, 16:42

Clear. Feels like 93°. High 88°, low 70°.

Pressure29.97 inHg
Wind1 mph N
Humidity57%
Visibility6.2 mi
Dew point71°
Sun, 0997° / 72°0Overcast
97 °Overcast

Frederick, Sunday, 9 August

Overcast. High 97°, low 72°.

Pressure29.91 inHg
Wind13.4 mph SW
Humidity44%
Visibility6.2 mi
Dew point69°
Mon, 10102° / 75°0Partly cloudy
102 °Partly cloudy

Frederick, Monday, 10 August

Partly cloudy. High 102°, low 75°.

Pressure29.88 inHg
Wind13.4 mph W
Humidity37%
Visibility6.2 mi
Dew point66°
Tue, 1198° / 78°0.02Light rain
98 °Light rain

Frederick, Tuesday, 11 August

Light rain. High 98°, low 78°.

Pressure29.83 inHg
Wind15.2 mph SW
Humidity52%
Visibility6.2 mi
Dew point65°
Wed, 1293° / 72°0.08Light rain
93 °Light rain

Frederick, Wednesday, 12 August

Light rain. High 93°, low 72°.

Pressure29.83 inHg
Wind13 mph NE
Humidity51%
Visibility6.2 mi
Dew point70°
Thu, 1374° / 67°0.51Rain
74 °Rain

Frederick, Thursday, 13 August

Rain. High 74°, low 67°.

Pressure29.88 inHg
Wind10.2 mph NE
Humidity95%
Visibility—
Dew point71°
Fri, 1481° / 58°0Clear
81 °Clear

Frederick, Friday, 14 August

Clear. High 81°, low 58°.

Pressure30.18 inHg
Wind9.2 mph NE
Humidity36%
Visibility—
Dew point47°
Sat, 1581° / 57°0Partly cloudy
81 °Partly cloudy

Frederick, Saturday, 15 August

Partly cloudy. High 81°, low 57°.

Pressure30.27 inHg
Wind8.7 mph SE
Humidity40%
Visibility—
Dew point50°
Sun, 1682° / 60°0.01Light rain
82 °Light rain

Frederick, Sunday, 16 August

Light rain. High 82°, low 60°.

Pressure30.15 inHg
Wind14.2 mph S
Humidity62%
Visibility—
Dew point60°
Mon, 1795° / 69°0.07Light rain
95 °Light rain

Frederick, Monday, 17 August

Light rain. High 95°, low 69°.

Pressure29.91 inHg
Wind12.7 mph S
Humidity54%
Visibility—
Dew point70°
Tue, 1893° / 72°0Overcast
93 °Overcast

Frederick, Tuesday, 18 August

Overcast. High 93°, low 72°.

Pressure29.97 inHg
Wind8.2 mph NE
Humidity50%
Visibility—
Dew point66°
Wed, 1996° / 70°0Mostly clear
96 °Mostly clear

Frederick, Wednesday, 19 August

Mostly clear. High 96°, low 70°.

Pressure29.88 inHg
Wind9.8 mph S
Humidity42%
Visibility—
Dew point64°
Thu, 2087° / 69°0.21Rain
87 °Rain

Frederick, Thursday, 20 August

Rain. High 87°, low 69°.

Pressure29.88 inHg
Wind11.7 mph N
Humidity53%
Visibility—
Dew point66°
Fri, 2189° / 67°0Mostly clear
89 °Mostly clear

Frederick, Friday, 21 August

Mostly clear. High 89°, low 67°.

Pressure29.94 inHg
Wind11 mph E
Humidity38%
Visibility—
Dew point56°
Sat, 2292° / 63°0.05Light rain
92 °Light rain

Frederick, Saturday, 22 August

Light rain. High 92°, low 63°.

Pressure29.91 inHg
Wind20 mph NE
Humidity34%
Visibility—
Dew point55°
Sun, 2378° / 58°0.01Light rain
78 °Light rain

Frederick, Sunday, 23 August

Light rain. High 78°, low 58°.

Pressure30.15 inHg
Wind12.6 mph NE
Humidity34%
Visibility—
Dew point43°

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 Frederick, 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 Frederick, 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.