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As of 07:03 CDT

Weather in Port Byron, IL

69°Current weather

Port Byron, Sunday, 9 August, 07:03

Overcast. Feels like 70°. High 91°, low 65°.

Pressure29.94 inHg
Wind6 mph S
Humidity86%
Visibility6.2 mi
Dew point65°

Two-week outlook for Port Byron, IL: week one averages a high of 82.5° and week two 87.1°, so week two runs 4.6° warmer than week one. Around 1.0 inches of precipitation are expected over the 14 days, across 5 wet days. The nearest weekend, August 9: 91°, with precipitation.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)82.5°65.4°0.9 in / 5 d—
2nd (August 16 – August 22)87.1°69.1°0.0 in / 0 d—

Weekend weather

Sun, August 9
Rain
91°65°
0.07 in
Sat, August 15
Light rain
74°61°
0.06 in
Sun, August 16
Light rain
77°66°
0.03 in
Sat, August 22
Clear
95°67°
no precip.
Mon, 1090° / 70°0.02Light rain
90 °Light rain

Port Byron, Monday, 10 August

Light rain. High 90°, low 70°.

Pressure29.88 inHg
Wind2.1 mph E
Humidity73%
Visibility6.2 mi
Dew point75°
Tue, 1190° / 70°0Light rain
90 °Light rain

Port Byron, Tuesday, 11 August

Light rain. High 90°, low 70°.

Pressure29.80 inHg
Wind7 mph S
Humidity71%
Visibility6.2 mi
Dew point72°
Wed, 1284° / 68°0.04Light rain
84 °Light rain

Port Byron, Wednesday, 12 August

Light rain. High 84°, low 68°.

Pressure29.83 inHg
Wind8.6 mph NE
Humidity66%
Visibility6.2 mi
Dew point71°
Thu, 1375° / 62°0.42Rain
75 °Rain

Port Byron, Thursday, 13 August

Rain. High 75°, low 62°.

Pressure30.03 inHg
Wind10.5 mph NE
Humidity72%
Visibility—
Dew point64°
Fri, 1473° / 62°0.33Rain
73 °Rain

Port Byron, Friday, 14 August

Rain. High 73°, low 62°.

Pressure30.15 inHg
Wind11.8 mph E
Humidity63%
Visibility—
Dew point57°
Sat, 1574° / 61°0.06Light rain
74 °Light rain

Port Byron, Saturday, 15 August

Light rain. High 74°, low 61°.

Pressure30.21 inHg
Wind10.9 mph SE
Humidity65%
Visibility—
Dew point60°
Sun, 1677° / 66°0.03Light rain
77 °Light rain

Port Byron, Sunday, 16 August

Light rain. High 77°, low 66°.

Pressure30.09 inHg
Wind5.3 mph E
Humidity83%
Visibility—
Dew point68°
Mon, 1782° / 65°0Overcast
82 °Overcast

Port Byron, Monday, 17 August

Overcast. High 82°, low 65°.

Pressure30.09 inHg
Wind5.7 mph W
Humidity62%
Visibility—
Dew point65°
Tue, 1883° / 64°0Overcast
83 °Overcast

Port Byron, Tuesday, 18 August

Overcast. High 83°, low 64°.

Pressure29.97 inHg
Wind11.8 mph S
Humidity68%
Visibility—
Dew point67°
Wed, 1992° / 70°0Overcast
92 °Overcast

Port Byron, Wednesday, 19 August

Overcast. High 92°, low 70°.

Pressure29.83 inHg
Wind12.1 mph SE
Humidity62%
Visibility—
Dew point72°
Thu, 2093° / 77°0Overcast
93 °Overcast

Port Byron, Thursday, 20 August

Overcast. High 93°, low 77°.

Pressure29.77 inHg
Wind8.9 mph S
Humidity41%
Visibility—
Dew point63°
Fri, 2187° / 74°0Mostly clear
87 °Mostly clear

Port Byron, Friday, 21 August

Mostly clear. High 87°, low 74°.

Pressure29.91 inHg
Wind12.8 mph NE
Humidity55%
Visibility—
Dew point67°
Sat, 2295° / 67°0Clear
95 °Clear

Port Byron, Saturday, 22 August

Clear. High 95°, low 67°.

Pressure29.83 inHg
Wind12.3 mph S
Humidity51%
Visibility—
Dew point69°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Port Byron, IL, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.