Monthly outlook for Alta, IA: average high 71.4°, average low 53.7°. That is 6.2° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 11 October (80.9°), the coolest 18 October (42.9°).
71.4°/53.7°
Average high / low
+6.2°
Above normal
4 / 4
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
72.5°
61.5°
+6.1°
18 October – 27 October
69.6°
57.5°
+6.8°
28 October – 6 November
at normal
52°
—
October records over 66 years
87.8°1 October 2023All-time high
17.6°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Lakeside (7 mi).
Fri, 0979° / 51°0.56
79 °
Alta, Friday, 9 October
Heavy rain. High 79°, low 51°.
Pressure29.91 inHg
Wind6.2 mph SE
Humidity68%
Visibility6.2 mi
Dew point59°
Sat, 1081° / 64°0
81 °
Alta, Saturday, 10 October
Clear. High 81°, low 64°.
Pressure29.83 inHg
Wind17.5 mph S
Humidity51%
Visibility6.2 mi
Dew point57°
Sun, 1181° / 66°0
81 °
Alta, Sunday, 11 October
Overcast. High 81°, low 66°.
Pressure29.83 inHg
Wind13.8 mph S
Humidity52%
Visibility6.2 mi
Dew point57°
Mon, 1280° / 63°0
80 °
Alta, Monday, 12 October
Clear. High 80°, low 63°.
Pressure29.68 inHg
Wind12.3 mph S
Humidity47%
Visibility—
Dew point56°
Tue, 1358° / 48°0
58 °
Alta, Tuesday, 13 October
Overcast. High 58°, low 48°.
Pressure30.09 inHg
Wind13 mph NW
Humidity61%
Visibility—
Dew point41°
Wed, 1480° / 52°0.04
80 °
Alta, Wednesday, 14 October
Light rain. High 80°, low 52°.
Pressure29.71 inHg
Wind24.4 mph S
Humidity57%
Visibility—
Dew point53°
Thu, 1579° / 60°0.02
79 °
Alta, Thursday, 15 October
Light rain. High 79°, low 60°.
Pressure29.56 inHg
Wind25.3 mph S
Humidity37%
Visibility—
Dew point49°
Fri, 1658° / 48°0
58 °
Alta, Friday, 16 October
Overcast. High 58°, low 48°.
Pressure30.24 inHg
Wind22.2 mph W
Humidity61%
Visibility—
Dew point40°
Sat, 1754° / 47°0
54 °
Alta, Saturday, 17 October
Overcast. High 54°, low 47°.
Pressure30.42 inHg
Wind8.5 mph N
Humidity55%
Visibility—
Dew point37°
Sun, 1865° / 43°0
65 °
Alta, Sunday, 18 October
Partly cloudy. High 65°, low 43°.
Pressure30.21 inHg
Wind9.1 mph SW
Humidity49%
Visibility—
Dew point40°
Mon, 1961° / 52°0.17
61 °
Alta, Monday, 19 October
Light rain. High 61°, low 52°.
Pressure30.12 inHg
Wind7 mph N
Humidity89%
Visibility—
Dew point53°
Tue, 2070° / 49°0
70 °
Alta, Tuesday, 20 October
Clear. High 70°, low 49°.
Pressure30.12 inHg
Wind6.8 mph S
Humidity55%
Visibility—
Dew point47°
Wed, 2173° / 53°0
73 °
Alta, Wednesday, 21 October
Mostly clear. High 73°, low 53°.
Pressure29.83 inHg
Wind17.4 mph S
Humidity53%
Visibility—
Dew point51°
Thu, 2271° / 58°0.2
71 °
Alta, Thursday, 22 October
Light rain. High 71°, low 58°.
Pressure29.47 inHg
Wind19.2 mph S
Humidity51%
Visibility—
Dew point50°
Fri, 2378° / 54°0
78 °
Alta, Friday, 23 October
Clear. High 78°, low 54°.
Pressure29.59 inHg
Wind15.5 mph S
Humidity52%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2457° / 40°0.07
57 °
Alta, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high57°
Average low40°
Average precipitation0.07 in
Chance of precipitation30%
Record high74° (1989)
Record low21° (2020)
Sun, 2556° / 40°0.04
56 °
Alta, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.04 in
Chance of precipitation17%
Record high76° (1989)
Record low25° (1962)
Mon, 2656° / 40°0.04
56 °
Alta, Monday, 26 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.04 in
Chance of precipitation20%
Record high75° (1989)
Record low19° (2020)
Tue, 2755° / 39°0.08
55 °
Alta, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.08 in
Chance of precipitation23%
Record high78° (1999)
Record low18° (2020)
Wed, 2854° / 38°0.05
54 °
Alta, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.05 in
Chance of precipitation17%
Record high76° (2016)
Record low20° (1967)
Thu, 2955° / 38°0.08
55 °
Alta, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low38°
Average precipitation0.08 in
Chance of precipitation25%
Record high79° (2024)
Record low23° (1980)
Fri, 3054° / 39°0.09
54 °
Alta, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.09 in
Chance of precipitation28%
Record high74° (2024)
Record low20° (1991)
Sat, 3153° / 37°0.09
53 °
Alta, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.09 in
Chance of precipitation27%
Record high74° (1968)
Record low18° (1993)
Sun, 0152° / 37°0.09
52 °
Alta, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.09 in
Chance of precipitation23%
Record high72° (1990)
Record low19° (2002)
Mon, 0251° / 36°0.04
51 °
Alta, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.04 in
Chance of precipitation22%
Record high73° (2022)
Record low10° (1991)
Tue, 0351° / 36°0.06
51 °
Alta, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.06 in
Chance of precipitation18%
Record high72° (2022)
Record low3° (1991)
Wed, 0450° / 35°0.02
50 °
Alta, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.02 in
Chance of precipitation18%
Record high69° (2020)
Record low-11° (1991)
Thu, 0551° / 35°0.06
51 °
Alta, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.06 in
Chance of precipitation18%
Record high69° (2020)
Record low16° (1991)
Fri, 0650° / 35°0.04
50 °
Alta, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.04 in
Chance of precipitation15%
Record high71° (2020)
Record low6° (1991)
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 Alta, 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 Alta, 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.