10-day forecast for Washington, IL: 60° to 93°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
93°
Best day: Sunday, August 9
67° · 0.17 in
Worst day: Saturday, August 15
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0993° / 67°0
Morning74°feels 76°
Afternoon91°feels 104°
Evening86°feels 95°
Overnight67°feels 68°
93 °
Washington, Sunday, 9 August
Clear. High 93°, low 67°.
Pressure29.91 inHg
Wind15.2 mph S
Humidity67%
Visibility6.2 mi
Dew point74°
Mon, 1093° / 74°0
Morning78°feels 80°
Afternoon88°feels 97°
Evening83°feels 88°
Overnight77°feels 78°
93 °
Washington, Monday, 10 August
Light rain. High 93°, low 74°.
Pressure29.91 inHg
Wind7.3 mph SW
Humidity63%
Visibility6.2 mi
Dew point72°
Tue, 1190° / 71°0.05
Morning73°feels 74°
Afternoon89°feels 96°
Evening81°feels 87°
Overnight77°feels 78°
90 °
Washington, Tuesday, 11 August
Light rain. High 90°, low 71°.
Pressure29.83 inHg
Wind12.6 mph W
Humidity60%
Visibility6.2 mi
Dew point72°
Wed, 1284° / 71°0.04
Morning74°feels 75°
Afternoon83°feels 89°
Evening74°feels 75°
Overnight74°feels 76°
84 °
Washington, Wednesday, 12 August
Light rain. High 84°, low 71°.
Pressure29.85 inHg
Wind2.7 mph NE
Humidity71%
Visibility6.2 mi
Dew point73°
Thu, 1377° / 62°0.04
Morning66°feels 67°
Afternoon75°feels 76°
Evening67°feels 67°
Overnight65°feels 66°
77 °
Washington, Thursday, 13 August
Light rain. High 77°, low 62°.
Pressure29.97 inHg
Wind13 mph NE
Humidity73%
Visibility—
Dew point66°
Fri, 1477° / 61°0
Morning65°feels 65°
Afternoon76°feels 76°
Evening71°feels 71°
Overnight64°feels 64°
77 °
Washington, Friday, 14 August
Overcast. High 77°, low 61°.
Pressure30.09 inHg
Wind8.7 mph E
Humidity64%
Visibility—
Dew point61°
Sat, 1567° / 60°0.17
Morning63°feels 62°
Afternoon61°feels 61°
Evening65°feels 65°
Overnight61°feels 62°
67 °
Washington, Saturday, 15 August
Rain. High 67°, low 60°.
Pressure30.27 inHg
Wind12.7 mph E
Humidity90%
Visibility—
Dew point58°
Sun, 1673° / 60°0.02
Morning62°feels 62°
Afternoon67°feels 67°
Evening69°feels 70°
Overnight62°feels 63°
73 °
Washington, Sunday, 16 August
Light rain. High 73°, low 60°.
Pressure30.12 inHg
Wind8.2 mph E
Humidity80%
Visibility—
Dew point59°
Mon, 1778° / 61°0.01
Morning67°feels 68°
Afternoon77°feels 78°
Evening74°feels 75°
Overnight67°feels 67°
78 °
Washington, Monday, 17 August
Light rain. High 78°, low 61°.
Pressure30.06 inHg
Wind5.2 mph NE
Humidity70%
Visibility—
Dew point65°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Washington, IL around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.