10-day forecast for Altmar, IL: 59° to 90°, with precipitation expected on 6 days. The table below breaks each day into morning, afternoon, evening and overnight.
89°
Best day: Monday, August 10
63° · 0.17 in
Worst day: Saturday, August 15
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0990° / 64°0.02
Morning71°feels 72°
Afternoon88°feels 101°
Evening84°feels 95°
Overnight66°feels 66°
90 °
Altmar, Sunday, 9 August
Light rain. High 90°, low 64°.
Pressure29.91 inHg
Wind15.3 mph S
Humidity77%
Visibility6.2 mi
Dew point75°
Mon, 1089° / 72°0
Morning75°feels 76°
Afternoon82°feels 89°
Evening81°feels 87°
Overnight76°feels 78°
89 °
Altmar, Monday, 10 August
Light rain. High 89°, low 72°.
Pressure29.91 inHg
Wind7.9 mph S
Humidity86%
Visibility6.2 mi
Dew point72°
Tue, 1186° / 73°0.04
Morning74°feels 75°
Afternoon86°feels 95°
Evening80°feels 85°
Overnight75°feels 77°
86 °
Altmar, Tuesday, 11 August
Light rain. High 86°, low 73°.
Pressure29.83 inHg
Wind15.1 mph SW
Humidity78%
Visibility6.2 mi
Dew point73°
Wed, 1282° / 69°0.04
Morning71°feels 72°
Afternoon82°feels 88°
Evening74°feels 75°
Overnight72°feels 74°
82 °
Altmar, Wednesday, 12 August
Light rain. High 82°, low 69°.
Pressure29.85 inHg
Wind5.4 mph N
Humidity72%
Visibility6.2 mi
Dew point71°
Thu, 1377° / 62°0.06
Morning66°feels 66°
Afternoon75°feels 76°
Evening66°feels 67°
Overnight64°feels 64°
77 °
Altmar, Thursday, 13 August
Light rain. High 77°, low 62°.
Pressure30.00 inHg
Wind7 mph NE
Humidity70%
Visibility—
Dew point64°
Fri, 1476° / 60°0
Morning65°feels 65°
Afternoon75°feels 75°
Evening70°feels 70°
Overnight65°feels 65°
76 °
Altmar, Friday, 14 August
Partly cloudy. High 76°, low 60°.
Pressure30.09 inHg
Wind8 mph E
Humidity67%
Visibility—
Dew point62°
Sat, 1563° / 59°0.17
Morning62°feels 61°
Afternoon61°feels 62°
Evening61°feels 61°
Overnight60°feels 60°
63 °
Altmar, Saturday, 15 August
Light rain. High 63°, low 59°.
Pressure30.27 inHg
Wind8.6 mph E
Humidity97%
Visibility—
Dew point60°
Sun, 1671° / 59°0
Morning62°feels 61°
Afternoon65°feels 65°
Evening67°feels 68°
Overnight62°feels 62°
71 °
Altmar, Sunday, 16 August
Light rain. High 71°, low 59°.
Pressure30.15 inHg
Wind6.6 mph SE
Humidity85%
Visibility—
Dew point59°
Mon, 1777° / 62°0.09
Morning65°feels 66°
Afternoon75°feels 76°
Evening73°feels 74°
Overnight67°feels 67°
77 °
Altmar, Monday, 17 August
Light rain. High 77°, low 62°.
Pressure30.06 inHg
Wind3.5 mph N
Humidity76%
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 Altmar, 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.