Monthly outlook for Niles, IL: average high 66°, average low 50.6°. That is 4.9° above the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 27 October (74.5°), the coolest 17 October (35.7°).
66°/50.6°
Average high / low
+4.9°
Above normal
4 / 5
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
65.2°
58.2°
+3.9°
27 October – 5 November
67.3°
54.4°
+7.2°
6 November – 15 November
at normal
49°
—
October records over 66 years
88.2°3 October 2025All-time high
26.2°31 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Park Ridge (2 mi).
Sun, 1859° / 43°0
59 °
Niles, Sunday, 18 October
Clear. High 59°, low 43°.
Pressure30.42 inHg
Wind11.1 mph SW
Humidity59%
Visibility6.2 mi
Dew point42°
Mon, 1963° / 41°0
63 °
Niles, Monday, 19 October
Mostly clear. High 63°, low 41°.
Pressure30.42 inHg
Wind2.8 mph SW
Humidity61%
Visibility6.2 mi
Dew point46°
Tue, 2064° / 45°0
64 °
Niles, Tuesday, 20 October
Clear. High 64°, low 45°.
Pressure30.39 inHg
Wind3.4 mph SE
Humidity62%
Visibility6.2 mi
Dew point50°
Wed, 2166° / 46°0
66 °
Niles, Wednesday, 21 October
Clear. High 66°, low 46°.
Pressure30.27 inHg
Wind4.4 mph SW
Humidity55%
Visibility—
Dew point47°
Thu, 2267° / 48°0
67 °
Niles, Thursday, 22 October
Clear. High 67°, low 48°.
Pressure30.27 inHg
Wind4.6 mph E
Humidity62%
Visibility—
Dew point51°
Fri, 2373° / 56°0
73 °
Niles, Friday, 23 October
Clear. High 73°, low 56°.
Pressure30.18 inHg
Wind6.4 mph SE
Humidity29%
Visibility—
Dew point36°
Sat, 2472° / 60°0
72 °
Niles, Saturday, 24 October
Overcast. High 72°, low 60°.
Pressure30.15 inHg
Wind10.8 mph S
Humidity27%
Visibility—
Dew point34°
Sun, 2572° / 58°0
72 °
Niles, Sunday, 25 October
Overcast. High 72°, low 58°.
Pressure30.00 inHg
Wind13 mph W
Humidity51%
Visibility—
Dew point51°
Mon, 2663° / 52°0
63 °
Niles, Monday, 26 October
Clear. High 63°, low 52°.
Pressure30.21 inHg
Wind6.5 mph NW
Humidity43%
Visibility—
Dew point39°
Tue, 2775° / 56°0
75 °
Niles, Tuesday, 27 October
Overcast. High 75°, low 56°.
Pressure30.00 inHg
Wind13.4 mph S
Humidity42%
Visibility—
Dew point48°
Wed, 2868° / 62°0.13
68 °
Niles, Wednesday, 28 October
Light rain. High 68°, low 62°.
Pressure29.88 inHg
Wind14.6 mph SW
Humidity52%
Visibility—
Dew point47°
Thu, 2964° / 52°0.04
64 °
Niles, Thursday, 29 October
Light rain. High 64°, low 52°.
Pressure30.12 inHg
Wind13 mph W
Humidity31%
Visibility—
Dew point30°
Fri, 3068° / 56°0.41
68 °
Niles, Friday, 30 October
Rain. High 68°, low 56°.
Pressure29.77 inHg
Wind13.8 mph S
Humidity97%
Visibility—
Dew point60°
Sat, 3171° / 52°0.13
71 °
Niles, Saturday, 31 October
Light rain. High 71°, low 52°.
Pressure29.59 inHg
Wind20.7 mph SW
Humidity38%
Visibility—
Dew point38°
Sun, 0158° / 47°0
58 °
Niles, Sunday, 1 November
Overcast. High 58°, low 47°.
Pressure30.15 inHg
Wind9.8 mph W
Humidity24%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0254° / 42°0.12
54 °
Niles, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.12 in
Chance of precipitation38%
Record high73° (1961)
Record low24° (1991)
Tue, 0353° / 41°0.06
53 °
Niles, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.06 in
Chance of precipitation22%
Record high71° (1987)
Record low18° (1991)
Wed, 0452° / 42°0.09
52 °
Niles, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.09 in
Chance of precipitation27%
Record high70° (2022)
Record low17° (1991)
Thu, 0553° / 41°0.13
53 °
Niles, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.13 in
Chance of precipitation33%
Record high73° (1978)
Record low20° (1991)
Fri, 0652° / 39°0.07
52 °
Niles, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.07 in
Chance of precipitation30%
Record high71° (1975)
Record low24° (1991)
Sat, 0751° / 39°0.05
51 °
Niles, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.05 in
Chance of precipitation22%
Record high69° (2020)
Record low20° (1991)
Sun, 0851° / 39°0.05
51 °
Niles, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.05 in
Chance of precipitation18%
Record high74° (2020)
Record low17° (1991)
Mon, 0951° / 39°0.12
51 °
Niles, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.12 in
Chance of precipitation38%
Record high72° (2020)
Record low21° (1991)
Tue, 1050° / 39°0.11
50 °
Niles, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.11 in
Chance of precipitation33%
Record high73° (2020)
Record low18° (2017)
Wed, 1148° / 36°0.08
48 °
Niles, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.08 in
Chance of precipitation32%
Record high69° (1964)
Record low15° (2019)
Thu, 1246° / 35°0.06
46 °
Niles, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.06 in
Chance of precipitation23%
Record high66° (1964)
Record low3° (2019)
Fri, 1346° / 35°0.05
46 °
Niles, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.05 in
Chance of precipitation18%
Record high68° (1999)
Record low1° (2019)
Sat, 1447° / 35°0.07
47 °
Niles, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.07 in
Chance of precipitation33%
Record high68° (1971)
Record low15° (1986)
Sun, 1547° / 36°0.09
47 °
Niles, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.09 in
Chance of precipitation28%
Record high69° (2025)
Record low19° (2019)
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 Niles, 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 Niles, 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.