Monthly outlook for Atlas, IL: average high 66.4°, average low 51.4°. That is 3° above the climate normal for October. Precipitation is expected on 6 days (about 2.4 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 25 October (76.3°), the coolest 30 October (40.5°).
66.4°/51.4°
Average high / low
+3°
Above normal
6 / 5
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
68.8°
62.6°
+3.4°
31 October – 9 November
62.5°
58°
+2.5°
10 November – 19 November
at normal
53.3°
—
October records over 66 years
92.7°10 October 1963All-time high
28.2°31 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Louisiana (7 mi).
Thu, 2276° / 49°0
76 °
Atlas, Thursday, 22 October
Clear. High 76°, low 49°.
Pressure30.27 inHg
Wind1.6 mph E
Humidity43%
Visibility6.2 mi
Dew point48°
Fri, 2373° / 53°0
73 °
Atlas, Friday, 23 October
Clear. High 73°, low 53°.
Pressure30.27 inHg
Wind8.1 mph S
Humidity47%
Visibility6.2 mi
Dew point50°
Sat, 2472° / 54°0
72 °
Atlas, Saturday, 24 October
Overcast. High 72°, low 54°.
Pressure30.33 inHg
Wind8.1 mph SE
Humidity50%
Visibility6.2 mi
Dew point50°
Sun, 2576° / 54°0
76 °
Atlas, Sunday, 25 October
Overcast. High 76°, low 54°.
Pressure30.33 inHg
Wind6.6 mph SE
Humidity43%
Visibility—
Dew point47°
Mon, 2674° / 55°0
74 °
Atlas, Monday, 26 October
Overcast. High 74°, low 55°.
Pressure30.24 inHg
Wind6.4 mph S
Humidity35%
Visibility—
Dew point42°
Tue, 2763° / 55°0.09
63 °
Atlas, Tuesday, 27 October
Light rain. High 63°, low 55°.
Pressure30.21 inHg
Wind11.6 mph NW
Humidity91%
Visibility—
Dew point54°
Wed, 2867° / 53°0.04
67 °
Atlas, Wednesday, 28 October
Light rain. High 67°, low 53°.
Pressure30.12 inHg
Wind18.1 mph NW
Humidity71%
Visibility—
Dew point50°
Thu, 2954° / 43°0
54 °
Atlas, Thursday, 29 October
Overcast. High 54°, low 43°.
Pressure30.30 inHg
Wind15.7 mph NW
Humidity49%
Visibility—
Dew point33°
Fri, 3058° / 41°0
58 °
Atlas, Friday, 30 October
Overcast. High 58°, low 41°.
Pressure30.30 inHg
Wind7 mph E
Humidity37%
Visibility—
Dew point29°
Sat, 3156° / 43°0.12
56 °
Atlas, Saturday, 31 October
Light rain. High 56°, low 43°.
Pressure30.18 inHg
Wind16.3 mph SE
Humidity30%
Visibility—
Dew point24°
Sun, 0157° / 48°0.74
57 °
Atlas, Sunday, 1 November
Rain. High 57°, low 48°.
Pressure29.97 inHg
Wind12 mph S
Humidity95%
Visibility—
Dew point53°
Mon, 0260° / 55°0.04
60 °
Atlas, Monday, 2 November
Light rain. High 60°, low 55°.
Pressure30.00 inHg
Wind9.1 mph NW
Humidity85%
Visibility—
Dew point53°
Tue, 0366° / 52°0.06
66 °
Atlas, Tuesday, 3 November
Light rain. High 66°, low 52°.
Pressure29.88 inHg
Wind16 mph SE
Humidity65%
Visibility—
Dew point52°
Wed, 0467° / 64°1.26
67 °
Atlas, Wednesday, 4 November
Heavy rain. High 67°, low 64°.
Pressure29.62 inHg
Wind17.7 mph SE
Humidity97%
Visibility—
Dew point65°
Thu, 0569° / 59°0
69 °
Atlas, Thursday, 5 November
Mostly clear. High 69°, low 59°.
Pressure29.91 inHg
Wind13.3 mph SW
Humidity54%
Visibility—
Dew point50°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0657° / 42°0.09
57 °
Atlas, Friday, 6 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.09 in
Chance of precipitation25%
Record high73° (2020)
Record low28° (1991)
Sat, 0757° / 42°0.04
57 °
Atlas, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.04 in
Chance of precipitation13%
Record high74° (1966)
Record low12° (1991)
Sun, 0857° / 42°0.04
57 °
Atlas, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.04 in
Chance of precipitation22%
Record high78° (2023)
Record low-1° (1991)
Mon, 0958° / 43°0.11
58 °
Atlas, Monday, 9 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.11 in
Chance of precipitation32%
Record high76° (2022)
Record low8° (1991)
Tue, 1055° / 40°0.14
55 °
Atlas, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.14 in
Chance of precipitation32%
Record high75° (2012)
Record low18° (2018)
Wed, 1153° / 38°0.07
53 °
Atlas, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.07 in
Chance of precipitation30%
Record high77° (1964)
Record low19° (2019)
Thu, 1252° / 37°0.07
52 °
Atlas, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (1999)
Record low10° (2019)
Fri, 1353° / 38°0.05
53 °
Atlas, Friday, 13 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.05 in
Chance of precipitation13%
Record high76° (1999)
Record low11° (1986)
Sat, 1454° / 39°0.06
54 °
Atlas, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.06 in
Chance of precipitation25%
Record high77° (2025)
Record low15° (1986)
Sun, 1553° / 39°0.09
53 °
Atlas, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.09 in
Chance of precipitation33%
Record high75° (2025)
Record low22° (2019)
Mon, 1653° / 38°0.08
53 °
Atlas, Monday, 16 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.08 in
Chance of precipitation23%
Record high72° (2001)
Record low23° (1997)
Tue, 1754° / 39°0.15
54 °
Atlas, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.15 in
Chance of precipitation30%
Record high76° (2016)
Record low20° (2014)
Wed, 1853° / 40°0.14
53 °
Atlas, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.14 in
Chance of precipitation30%
Record high73° (1999)
Record low15° (2014)
Thu, 1953° / 39°0.09
53 °
Atlas, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.09 in
Chance of precipitation23%
Record high72° (1979)
Record low21° (2022)
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 Atlas, 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 Atlas, 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.