Monthly outlook for Riverdale, IL: average high 49.8°, average low 40°. That is 1.8° above the climate normal for November. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 10 November (62.2°), the coolest 14 November (29.4°).
49.8°/40°
Average high / low
+1.8°
Above normal
4 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 November – 19 November
50.8°
47.8°
+1.6°
20 November – 29 November
48.3°
43.8°
+2.5°
30 November – 9 December
at normal
38.8°
—
November records over 66 years
74.5°8 November 2020All-time high
3°13 November 2019All-time low
Climate normals and records are computed from the nearest reference point — Calumet Park (2 mi).
Wed, 1160° / 40°0.15
60 °
Riverdale, Wednesday, 11 November
Rain. High 60°, low 40°.
Pressure29.83 inHg
Wind4.1 mph NE
Humidity71%
Visibility6.2 mi
Dew point45°
Thu, 1245° / 35°0
45 °
Riverdale, Thursday, 12 November
Overcast. High 45°, low 35°.
Pressure29.94 inHg
Wind12.3 mph N
Humidity63%
Visibility6.2 mi
Dew point29°
Fri, 1342° / 34°0
42 °
Riverdale, Friday, 13 November
Overcast. High 42°, low 34°.
Pressure30.03 inHg
Wind10.1 mph N
Humidity68%
Visibility6.2 mi
Dew point31°
Sat, 1443° / 29°0
43 °
Riverdale, Saturday, 14 November
Overcast. High 43°, low 29°.
Pressure30.21 inHg
Wind6.3 mph NW
Humidity64%
Visibility—
Dew point30°
Sun, 1547° / 30°0
47 °
Riverdale, Sunday, 15 November
Clear. High 47°, low 30°.
Pressure30.36 inHg
Wind4 mph E
Humidity55%
Visibility—
Dew point29°
Mon, 1649° / 43°0
49 °
Riverdale, Monday, 16 November
Overcast. High 49°, low 43°.
Pressure30.42 inHg
Wind6.3 mph NE
Humidity51%
Visibility—
Dew point30°
Tue, 1750° / 39°0
50 °
Riverdale, Tuesday, 17 November
Clear. High 50°, low 39°.
Pressure30.50 inHg
Wind4.9 mph SE
Humidity44%
Visibility—
Dew point27°
Wed, 1853° / 38°0
53 °
Riverdale, Wednesday, 18 November
Clear. High 53°, low 38°.
Pressure30.42 inHg
Wind8.4 mph S
Humidity41%
Visibility—
Dew point26°
Thu, 1957° / 43°0
57 °
Riverdale, Thursday, 19 November
Overcast. High 57°, low 43°.
Pressure30.33 inHg
Wind10.1 mph S
Humidity45%
Visibility—
Dew point32°
Fri, 2051° / 49°0.14
51 °
Riverdale, Friday, 20 November
Light rain. High 51°, low 49°.
Pressure30.39 inHg
Wind7.7 mph SW
Humidity90%
Visibility—
Dew point46°
Sat, 2150° / 46°0.13
50 °
Riverdale, Saturday, 21 November
Light rain. High 50°, low 46°.
Pressure30.45 inHg
Wind9.5 mph NE
Humidity82%
Visibility—
Dew point42°
Sun, 2247° / 44°0
47 °
Riverdale, Sunday, 22 November
Overcast. High 47°, low 44°.
Pressure30.27 inHg
Wind9.2 mph E
Humidity64%
Visibility—
Dew point35°
Mon, 2354° / 47°0.12
54 °
Riverdale, Monday, 23 November
Light rain. High 54°, low 47°.
Pressure29.83 inHg
Wind13.5 mph SW
Humidity91%
Visibility—
Dew point50°
Tue, 2447° / 44°0
47 °
Riverdale, Tuesday, 24 November
Overcast. High 47°, low 44°.
Pressure29.85 inHg
Wind14 mph SW
Humidity73%
Visibility—
Dew point36°
Wed, 2541° / 36°0
41 °
Riverdale, Wednesday, 25 November
Overcast. High 41°, low 36°.
Pressure30.12 inHg
Wind9 mph NW
Humidity35%
Visibility—
Dew point13°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2644° / 33°0.13
44 °
Riverdale, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.13 in
Chance of precipitation43%
Record high62° (1990)
Record low8° (1977)
Fri, 2743° / 33°0.22
43 °
Riverdale, Friday, 27 November
Climate normal for this date — 60-year average.
Average high43°
Average low33°
Average precipitation0.22 in
Chance of precipitation47%
Record high65° (1990)
Record low16° (1977)
Sat, 2841° / 30°0.14
41 °
Riverdale, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.14 in
Chance of precipitation28%
Record high64° (1990)
Record low6° (2018)
Sun, 2942° / 30°0.08
42 °
Riverdale, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.08 in
Chance of precipitation32%
Record high65° (1998)
Record low10° (1976)
Mon, 3042° / 31°0.09
42 °
Riverdale, Monday, 30 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.09 in
Chance of precipitation30%
Record high64° (1998)
Record low13° (1976)
Tue, 0139° / 29°0.15
39 °
Riverdale, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high39°
Average low29°
Average precipitation0.15 in
Chance of precipitation40%
Record high64° (1970)
Record low8° (2025)
Wed, 0240° / 29°0.07
40 °
Riverdale, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.07 in
Chance of precipitation33%
Record high67° (1982)
Record low11° (1976)
Thu, 0340° / 29°0.09
40 °
Riverdale, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.09 in
Chance of precipitation35%
Record high67° (2012)
Record low10° (2006)
Fri, 0439° / 29°0.07
39 °
Riverdale, Friday, 4 December
Climate normal for this date — 60-year average.
Average high39°
Average low29°
Average precipitation0.07 in
Chance of precipitation27%
Record high64° (1998)
Record low1° (1991)
Sat, 0539° / 28°0.09
39 °
Riverdale, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.09 in
Chance of precipitation32%
Record high65° (2001)
Record low1° (1991)
Sun, 0638° / 27°0.06
38 °
Riverdale, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.06 in
Chance of precipitation27%
Record high61° (1998)
Record low6° (1977)
Mon, 0736° / 27°0.13
36 °
Riverdale, Monday, 7 December
Climate normal for this date — 60-year average.
Average high36°
Average low27°
Average precipitation0.13 in
Chance of precipitation27%
Record high57° (1980)
Record low4° (1977)
Tue, 0837° / 27°0.08
37 °
Riverdale, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high37°
Average low27°
Average precipitation0.08 in
Chance of precipitation28%
Record high62° (1991)
Record low5° (2006)
Wed, 0937° / 26°0.09
37 °
Riverdale, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high37°
Average low26°
Average precipitation0.09 in
Chance of precipitation40%
Record high55° (2023)
Record low-2° (1995)
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 Riverdale, 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 Riverdale, 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.