Monthly outlook for Summit, IA: average high 71.7°, average low 53.2°. That is 3.6° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 15 October (88.5°), the coolest 18 October (40.8°).
71.7°/53.2°
Average high / low
+3.6°
Above normal
0 / 4
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
75.4°
66.2°
+5.1°
17 October – 26 October
65.4°
62.2°
+1.8°
27 October – 5 November
at normal
56.8°
—
October records over 66 years
94.5°5 October 1963All-time high
9°27 October 1997All-time low
Climate normals and records are computed from the nearest reference point — Shenandoah (5 mi).
Thu, 0880° / 51°0
80 °
Summit, Thursday, 8 October
Partly cloudy. High 80°, low 51°.
Pressure30.12 inHg
Wind4 mph SE
Humidity53%
Visibility6.2 mi
Dew point52°
Fri, 0982° / 61°0
82 °
Summit, Friday, 9 October
Clear. High 82°, low 61°.
Pressure29.94 inHg
Wind13.5 mph S
Humidity57%
Visibility6.2 mi
Dew point61°
Sat, 1082° / 65°0
82 °
Summit, Saturday, 10 October
Clear. High 82°, low 65°.
Pressure29.91 inHg
Wind16.3 mph S
Humidity54%
Visibility6.2 mi
Dew point60°
Sun, 1180° / 64°0
80 °
Summit, Sunday, 11 October
Clear. High 80°, low 64°.
Pressure29.80 inHg
Wind13.7 mph S
Humidity48%
Visibility6.2 mi
Dew point55°
Mon, 1270° / 57°0
70 °
Summit, Monday, 12 October
Clear. High 70°, low 57°.
Pressure29.85 inHg
Wind14.1 mph N
Humidity61%
Visibility—
Dew point54°
Tue, 1362° / 50°0
62 °
Summit, Tuesday, 13 October
Mostly clear. High 62°, low 50°.
Pressure30.15 inHg
Wind15.6 mph N
Humidity50%
Visibility—
Dew point40°
Wed, 1472° / 48°0
72 °
Summit, Wednesday, 14 October
Overcast. High 72°, low 48°.
Pressure29.97 inHg
Wind21.2 mph SE
Humidity50%
Visibility—
Dew point45°
Thu, 1588° / 63°0.01
88 °
Summit, Thursday, 15 October
Light rain. High 88°, low 63°.
Pressure29.56 inHg
Wind25.2 mph S
Humidity52%
Visibility—
Dew point64°
Fri, 1656° / 49°0
56 °
Summit, Friday, 16 October
Overcast. High 56°, low 49°.
Pressure30.03 inHg
Wind19 mph W
Humidity46%
Visibility—
Dew point35°
Sat, 1753° / 47°0
53 °
Summit, Saturday, 17 October
Overcast. High 53°, low 47°.
Pressure30.15 inHg
Wind15.8 mph NW
Humidity55%
Visibility—
Dew point35°
Sun, 1858° / 41°0
58 °
Summit, Sunday, 18 October
Mostly clear. High 58°, low 41°.
Pressure30.18 inHg
Wind13.5 mph NW
Humidity48%
Visibility—
Dew point34°
Mon, 1967° / 42°0
67 °
Summit, Monday, 19 October
Clear. High 67°, low 42°.
Pressure30.18 inHg
Wind7.7 mph SW
Humidity39%
Visibility—
Dew point35°
Tue, 2074° / 50°0
74 °
Summit, Tuesday, 20 October
Clear. High 74°, low 50°.
Pressure30.12 inHg
Wind8 mph S
Humidity49%
Visibility—
Dew point48°
Wed, 2173° / 54°0
73 °
Summit, Wednesday, 21 October
Partly cloudy. High 73°, low 54°.
Pressure30.12 inHg
Wind10.8 mph E
Humidity49%
Visibility—
Dew point49°
Thu, 2268° / 52°0
68 °
Summit, Thursday, 22 October
Overcast. High 68°, low 52°.
Pressure30.12 inHg
Wind11.8 mph SE
Humidity54%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2362° / 46°0.11
62 °
Summit, Friday, 23 October
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.11 in
Chance of precipitation33%
Record high84° (2022)
Record low26° (1981)
Sat, 2460° / 44°0.11
60 °
Summit, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.11 in
Chance of precipitation23%
Record high78° (2012)
Record low27° (2020)
Sun, 2560° / 43°0.04
60 °
Summit, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high60°
Average low43°
Average precipitation0.04 in
Chance of precipitation18%
Record high79° (1989)
Record low30° (1980)
Mon, 2660° / 43°0.1
60 °
Summit, Monday, 26 October
Climate normal for this date — 60-year average.
Average high60°
Average low43°
Average precipitation0.1 in
Chance of precipitation25%
Record high80° (2014)
Record low23° (1980)
Tue, 2759° / 42°0.07
59 °
Summit, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high59°
Average low42°
Average precipitation0.07 in
Chance of precipitation17%
Record high83° (1999)
Record low9° (1997)
Wed, 2858° / 42°0.07
58 °
Summit, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.07 in
Chance of precipitation17%
Record high80° (2016)
Record low24° (1969)
Thu, 2960° / 42°0.09
60 °
Summit, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high60°
Average low42°
Average precipitation0.09 in
Chance of precipitation25%
Record high82° (2024)
Record low20° (1980)
Fri, 3059° / 43°0.14
59 °
Summit, Friday, 30 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.14 in
Chance of precipitation33%
Record high77° (2024)
Record low23° (1991)
Sat, 3157° / 41°0.11
57 °
Summit, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.11 in
Chance of precipitation30%
Record high78° (1968)
Record low20° (1993)
Sun, 0157° / 40°0.17
57 °
Summit, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high57°
Average low40°
Average precipitation0.17 in
Chance of precipitation32%
Record high78° (1990)
Record low21° (1991)
Mon, 0255° / 39°0.09
55 °
Summit, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.09 in
Chance of precipitation25%
Record high76° (1964)
Record low12° (1991)
Tue, 0355° / 39°0.1
55 °
Summit, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.1 in
Chance of precipitation20%
Record high78° (2022)
Record low9° (1991)
Wed, 0455° / 39°0.07
55 °
Summit, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.07 in
Chance of precipitation15%
Record high72° (1978)
Record low10° (1991)
Thu, 0555° / 38°0.05
55 °
Summit, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low38°
Average precipitation0.05 in
Chance of precipitation23%
Record high74° (2015)
Record low21° (1967)
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 Summit, IA 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 Summit, IA 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.