Monthly outlook for Prospect Heights, CO: average high 64.6°, average low 45.7°. That is 3° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 21 October (75.1°), the coolest 28 October (36.1°).
64.6°/45.7°
Average high / low
+3°
Above normal
3 / 3
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
64.2°
61.6°
+1.5°
30 October – 8 November
65.1°
55.7°
+5.2°
9 November – 18 November
at normal
52.4°
—
October records over 66 years
90.5°2 October 2024All-time high
-5.4°30 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Park Center (4 mi).
Wed, 2175° / 52°0
75 °
Prospect Heights, Wednesday, 21 October
Mostly clear. High 75°, low 52°.
Pressure30.15 inHg
Wind4.3 mph E
Humidity30%
Visibility6.2 mi
Dew point36°
Thu, 2266° / 47°0.05
66 °
Prospect Heights, Thursday, 22 October
Light rain. High 66°, low 47°.
Pressure30.09 inHg
Wind4.3 mph W
Humidity49%
Visibility6.2 mi
Dew point44°
Fri, 2373° / 50°0
73 °
Prospect Heights, Friday, 23 October
Light rain. High 73°, low 50°.
Pressure29.77 inHg
Wind0.3 mph SE
Humidity37%
Visibility6.2 mi
Dew point43°
Sat, 2464° / 43°0.01
64 °
Prospect Heights, Saturday, 24 October
Light rain. High 64°, low 43°.
Pressure30.09 inHg
Wind13.2 mph E
Humidity36%
Visibility—
Dew point32°
Sun, 2558° / 46°0.25
58 °
Prospect Heights, Sunday, 25 October
Light rain. High 58°, low 46°.
Pressure30.24 inHg
Wind4.6 mph SE
Humidity62%
Visibility—
Dew point39°
Mon, 2661° / 45°0.02
61 °
Prospect Heights, Monday, 26 October
Light rain. High 61°, low 45°.
Pressure30.15 inHg
Wind7.8 mph E
Humidity40%
Visibility—
Dew point33°
Tue, 2748° / 37°0.22
48 °
Prospect Heights, Tuesday, 27 October
Snow. High 48°, low 37°.
Pressure30.47 inHg
Wind8.2 mph E
Humidity91%
Visibility—
Dew point41°
Wed, 2859° / 36°0.02
59 °
Prospect Heights, Wednesday, 28 October
Snow. High 59°, low 36°.
Pressure30.21 inHg
Wind6.6 mph W
Humidity61%
Visibility—
Dew point39°
Thu, 2964° / 47°0
64 °
Prospect Heights, Thursday, 29 October
Overcast. High 64°, low 47°.
Pressure29.85 inHg
Wind9 mph W
Humidity48%
Visibility—
Dew point39°
Fri, 3061° / 45°0
61 °
Prospect Heights, Friday, 30 October
Clear. High 61°, low 45°.
Pressure29.88 inHg
Wind6.9 mph E
Humidity54%
Visibility—
Dew point39°
Sat, 3165° / 47°0
65 °
Prospect Heights, Saturday, 31 October
Partly cloudy. High 65°, low 47°.
Pressure29.85 inHg
Wind9 mph W
Humidity34%
Visibility—
Dew point31°
Sun, 0165° / 43°0
65 °
Prospect Heights, Sunday, 1 November
Clear. High 65°, low 43°.
Pressure30.06 inHg
Wind11.3 mph W
Humidity27%
Visibility—
Dew point23°
Mon, 0267° / 45°0
67 °
Prospect Heights, Monday, 2 November
Partly cloudy. High 67°, low 45°.
Pressure30.21 inHg
Wind8.2 mph W
Humidity25%
Visibility—
Dew point24°
Tue, 0364° / 46°0
64 °
Prospect Heights, Tuesday, 3 November
Clear. High 64°, low 46°.
Pressure30.18 inHg
Wind7.1 mph W
Humidity27%
Visibility—
Dew point25°
Wed, 0469° / 51°0
69 °
Prospect Heights, Wednesday, 4 November
Overcast. High 69°, low 51°.
Pressure29.80 inHg
Wind12.5 mph SW
Humidity28%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0556° / 30°0.01
56 °
Prospect Heights, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low30°
Average precipitation0.01 in
Chance of precipitation5%
Record high72° (2021)
Record low7° (1974)
Fri, 0657° / 29°0.03
57 °
Prospect Heights, Friday, 6 November
Climate normal for this date — 60-year average.
Average high57°
Average low29°
Average precipitation0.03 in
Chance of precipitation7%
Record high75° (2021)
Record low-5° (1993)
Sat, 0756° / 29°0.02
56 °
Prospect Heights, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high56°
Average low29°
Average precipitation0.02 in
Chance of precipitation12%
Record high74° (2021)
Record low2° (1993)
Sun, 0856° / 30°0.04
56 °
Prospect Heights, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high56°
Average low30°
Average precipitation0.04 in
Chance of precipitation15%
Record high73° (1978)
Record low-2° (1993)
Mon, 0954° / 29°0.04
54 °
Prospect Heights, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low29°
Average precipitation0.04 in
Chance of precipitation20%
Record high71° (1978)
Record low3° (1993)
Tue, 1054° / 28°0.02
54 °
Prospect Heights, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high54°
Average low28°
Average precipitation0.02 in
Chance of precipitation15%
Record high73° (2025)
Record low2° (1998)
Wed, 1152° / 28°0.03
52 °
Prospect Heights, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high52°
Average low28°
Average precipitation0.03 in
Chance of precipitation18%
Record high72° (1973)
Record low3° (1998)
Thu, 1252° / 27°0.03
52 °
Prospect Heights, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low27°
Average precipitation0.03 in
Chance of precipitation18%
Record high72° (2025)
Record low2° (2014)
Fri, 1353° / 28°0.02
53 °
Prospect Heights, Friday, 13 November
Climate normal for this date — 60-year average.
Average high53°
Average low28°
Average precipitation0.02 in
Chance of precipitation10%
Record high72° (1999)
Record low0° (2014)
Sat, 1452° / 28°0.04
52 °
Prospect Heights, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high52°
Average low28°
Average precipitation0.04 in
Chance of precipitation20%
Record high73° (2025)
Record low-4° (1961)
Sun, 1552° / 27°0.03
52 °
Prospect Heights, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high52°
Average low27°
Average precipitation0.03 in
Chance of precipitation17%
Record high75° (2025)
Record low-13° (1997)
Mon, 1653° / 26°0.03
53 °
Prospect Heights, Monday, 16 November
Climate normal for this date — 60-year average.
Average high53°
Average low26°
Average precipitation0.03 in
Chance of precipitation10%
Record high72° (1999)
Record low-10° (1997)
Tue, 1751° / 27°0.04
51 °
Prospect Heights, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low27°
Average precipitation0.04 in
Chance of precipitation15%
Record high69° (1999)
Record low-1° (2014)
Wed, 1850° / 26°0.02
50 °
Prospect Heights, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high50°
Average low26°
Average precipitation0.02 in
Chance of precipitation7%
Record high70° (2008)
Record low3° (2014)
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 Prospect Heights, CO 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 Prospect Heights, CO 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.