Monthly outlook for Shelby, IA: average high 62.1°, average low 49.2°. That is 1.8° above the climate normal for October. Precipitation is expected on 6 days (about 1.4 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 23 October (71.5°), the coolest 2 November (33.1°).
62.1°/49.2°
Average high / low
+1.8°
Above normal
6 / 4
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
66.3°
60.5°
+3.3°
28 October – 6 November
55.1°
55.1°
-0°
7 November – 16 November
at normal
50.1°
—
October records over 66 years
92.1°5 October 2024All-time high
13.5°27 October 1997All-time low
Climate normals and records are computed from the nearest reference point — Oakland (14 mi).
Mon, 1966° / 43°0
66 °
Shelby, Monday, 19 October
Overcast. High 66°, low 43°.
Pressure30.30 inHg
Wind7.5 mph S
Humidity64%
Visibility6.2 mi
Dew point46°
Tue, 2066° / 45°0
66 °
Shelby, Tuesday, 20 October
Clear. High 66°, low 45°.
Pressure30.30 inHg
Wind9.1 mph S
Humidity58%
Visibility6.2 mi
Dew point47°
Wed, 2170° / 50°0
70 °
Shelby, Wednesday, 21 October
Clear. High 70°, low 50°.
Pressure30.24 inHg
Wind6.4 mph S
Humidity65%
Visibility6.2 mi
Dew point52°
Thu, 2270° / 51°0
70 °
Shelby, Thursday, 22 October
Clear. High 70°, low 51°.
Pressure30.24 inHg
Wind9.2 mph SE
Humidity58%
Visibility6.2 mi
Dew point50°
Fri, 2371° / 57°0
71 °
Shelby, Friday, 23 October
Overcast. High 71°, low 57°.
Pressure30.06 inHg
Wind18.4 mph S
Humidity52%
Visibility—
Dew point49°
Sat, 2470° / 59°0
70 °
Shelby, Saturday, 24 October
Overcast. High 70°, low 59°.
Pressure30.12 inHg
Wind14.8 mph S
Humidity57%
Visibility—
Dew point52°
Sun, 2557° / 50°0.01
57 °
Shelby, Sunday, 25 October
Light rain. High 57°, low 50°.
Pressure30.42 inHg
Wind7.4 mph E
Humidity43%
Visibility—
Dew point33°
Mon, 2669° / 53°0
69 °
Shelby, Monday, 26 October
Overcast. High 69°, low 53°.
Pressure30.21 inHg
Wind11.2 mph SE
Humidity58%
Visibility—
Dew point47°
Tue, 2758° / 55°0.08
58 °
Shelby, Tuesday, 27 October
Light rain. High 58°, low 55°.
Pressure30.21 inHg
Wind11.5 mph SE
Humidity83%
Visibility—
Dew point51°
Wed, 2860° / 56°0.06
60 °
Shelby, Wednesday, 28 October
Light rain. High 60°, low 56°.
Pressure30.09 inHg
Wind12.1 mph S
Humidity89%
Visibility—
Dew point56°
Thu, 2961° / 56°0.22
61 °
Shelby, Thursday, 29 October
Light rain. High 61°, low 56°.
Pressure29.85 inHg
Wind14 mph S
Humidity88%
Visibility—
Dew point55°
Fri, 3060° / 47°0.07
60 °
Shelby, Friday, 30 October
Light rain. High 60°, low 47°.
Pressure30.03 inHg
Wind14 mph N
Humidity49%
Visibility—
Dew point35°
Sat, 3155° / 44°0.04
55 °
Shelby, Saturday, 31 October
Light rain. High 55°, low 44°.
Pressure30.09 inHg
Wind10.7 mph E
Humidity56%
Visibility—
Dew point38°
Sun, 0153° / 47°0.86
53 °
Shelby, Sunday, 1 November
Rain. High 53°, low 47°.
Pressure29.85 inHg
Wind21 mph N
Humidity94%
Visibility—
Dew point51°
Mon, 0242° / 33°0.02
42 °
Shelby, Monday, 2 November
Light rain. High 42°, low 33°.
Pressure30.39 inHg
Wind20.7 mph N
Humidity53%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0354° / 38°0.11
54 °
Shelby, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.11 in
Chance of precipitation22%
Record high77° (2022)
Record low6° (1991)
Wed, 0453° / 37°0.05
53 °
Shelby, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.05 in
Chance of precipitation15%
Record high70° (1978)
Record low0° (1991)
Thu, 0553° / 37°0.06
53 °
Shelby, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation20%
Record high72° (2015)
Record low20° (1967)
Fri, 0654° / 37°0.04
54 °
Shelby, Friday, 6 November
Climate normal for this date — 60-year average.
Average high54°
Average low37°
Average precipitation0.04 in
Chance of precipitation13%
Record high74° (1980)
Record low13° (1991)
Sat, 0754° / 36°0.02
54 °
Shelby, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high54°
Average low36°
Average precipitation0.02 in
Chance of precipitation10%
Record high72° (2001)
Record low-4° (1991)
Sun, 0853° / 37°0.06
53 °
Shelby, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation17%
Record high78° (1999)
Record low-1° (1991)
Mon, 0953° / 36°0.11
53 °
Shelby, Monday, 9 November
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.11 in
Chance of precipitation30%
Record high74° (1999)
Record low17° (2018)
Tue, 1049° / 34°0.08
49 °
Shelby, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.08 in
Chance of precipitation27%
Record high75° (2012)
Record low10° (2018)
Wed, 1148° / 31°0.07
48 °
Shelby, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.07 in
Chance of precipitation18%
Record high72° (1964)
Record low7° (1986)
Thu, 1247° / 31°0.06
47 °
Shelby, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.06 in
Chance of precipitation25%
Record high74° (2005)
Record low1° (1968)
Fri, 1349° / 32°0.07
49 °
Shelby, Friday, 13 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.07 in
Chance of precipitation20%
Record high78° (1999)
Record low4° (1986)
Sat, 1449° / 34°0.02
49 °
Shelby, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.02 in
Chance of precipitation10%
Record high72° (2025)
Record low11° (2014)
Sun, 1549° / 33°0.06
49 °
Shelby, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.06 in
Chance of precipitation22%
Record high70° (2001)
Record low1° (1972)
Mon, 1650° / 33°0.04
50 °
Shelby, Monday, 16 November
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.04 in
Chance of precipitation13%
Record high69° (2001)
Record low11° (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 Shelby, 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 Shelby, 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.