Monthly outlook for Marietta, IA: average high 63.9°, average low 50.4°. That is 5.2° above the climate normal for October. Precipitation is expected on 6 days (about 2.0 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 24 October (75.7°), the coolest 2 November (40.4°).
63.9°/50.4°
Average high / low
+5.2°
Above normal
6 / 4
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
66.3°
55.9°
+5.7°
3 November – 12 November
59.9°
50.4°
+5.3°
13 November – 22 November
at normal
46.5°
—
October records over 66 years
88.7°6 October 1963All-time high
16.7°30 October 1980All-time low
Climate normals and records are computed from the nearest reference point — Ferguson (12 mi).
Sun, 2573° / 53°0
73 °
Marietta, Sunday, 25 October
Overcast. High 73°, low 53°.
Pressure30.36 inHg
Wind0.2 mph E
Humidity67%
Visibility6.2 mi
Dew point55°
Mon, 2668° / 50°0
68 °
Marietta, Monday, 26 October
Overcast. High 68°, low 50°.
Pressure30.30 inHg
Wind7.6 mph E
Humidity66%
Visibility6.2 mi
Dew point51°
Tue, 2767° / 56°0
67 °
Marietta, Tuesday, 27 October
Light rain. High 67°, low 56°.
Pressure30.12 inHg
Wind8 mph S
Humidity57%
Visibility6.2 mi
Dew point50°
Wed, 2870° / 58°0.29
70 °
Marietta, Wednesday, 28 October
Rain. High 70°, low 58°.
Pressure30.06 inHg
Wind7.3 mph SW
Humidity67%
Visibility6.2 mi
Dew point56°
Thu, 2965° / 52°0.36
65 °
Marietta, Thursday, 29 October
Rain. High 65°, low 52°.
Pressure30.21 inHg
Wind7.4 mph N
Humidity47%
Visibility—
Dew point41°
Fri, 3069° / 53°0.28
69 °
Marietta, Friday, 30 October
Rain. High 69°, low 53°.
Pressure30.06 inHg
Wind13.6 mph S
Humidity72%
Visibility—
Dew point56°
Sat, 3162° / 58°0.62
62 °
Marietta, Saturday, 31 October
Rain. High 62°, low 58°.
Pressure29.88 inHg
Wind16.5 mph S
Humidity71%
Visibility—
Dew point52°
Sun, 0162° / 43°0.21
62 °
Marietta, Sunday, 1 November
Light rain. High 62°, low 43°.
Pressure29.71 inHg
Wind21.6 mph NW
Humidity83%
Visibility—
Dew point56°
Mon, 0250° / 40°0.2
50 °
Marietta, Monday, 2 November
Light rain. High 50°, low 40°.
Pressure29.80 inHg
Wind26.7 mph NW
Humidity82%
Visibility—
Dew point40°
Tue, 0358° / 50°0
58 °
Marietta, Tuesday, 3 November
Overcast. High 58°, low 50°.
Pressure29.85 inHg
Wind19.9 mph N
Humidity74%
Visibility—
Dew point48°
Wed, 0458° / 43°0
58 °
Marietta, Wednesday, 4 November
Clear. High 58°, low 43°.
Pressure29.80 inHg
Wind12.5 mph N
Humidity55%
Visibility—
Dew point39°
Thu, 0557° / 46°0
57 °
Marietta, Thursday, 5 November
Overcast. High 57°, low 46°.
Pressure29.97 inHg
Wind6.8 mph SE
Humidity69%
Visibility—
Dew point44°
Fri, 0660° / 50°0
60 °
Marietta, Friday, 6 November
Overcast. High 60°, low 50°.
Pressure30.18 inHg
Wind6.8 mph E
Humidity69%
Visibility—
Dew point47°
Sat, 0761° / 48°0
61 °
Marietta, Saturday, 7 November
Overcast. High 61°, low 48°.
Pressure30.24 inHg
Wind7.7 mph S
Humidity68%
Visibility—
Dew point48°
Sun, 0866° / 50°0
66 °
Marietta, Sunday, 8 November
Mostly clear. High 66°, low 50°.
Pressure30.03 inHg
Wind13.3 mph S
Humidity57%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0951° / 36°0.09
51 °
Marietta, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.09 in
Chance of precipitation32%
Record high73° (1999)
Record low17° (1991)
Tue, 1048° / 33°0.1
48 °
Marietta, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.1 in
Chance of precipitation30%
Record high74° (2012)
Record low13° (2018)
Wed, 1147° / 32°0.09
47 °
Marietta, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.09 in
Chance of precipitation20%
Record high71° (1964)
Record low10° (2019)
Thu, 1246° / 31°0.06
46 °
Marietta, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.06 in
Chance of precipitation23%
Record high66° (2005)
Record low-2° (2019)
Fri, 1347° / 31°0.07
47 °
Marietta, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.07 in
Chance of precipitation28%
Record high75° (1999)
Record low6° (1986)
Sat, 1447° / 32°0.03
47 °
Marietta, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.03 in
Chance of precipitation20%
Record high71° (1964)
Record low15° (1986)
Sun, 1547° / 32°0.06
47 °
Marietta, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.06 in
Chance of precipitation22%
Record high69° (2001)
Record low4° (1972)
Mon, 1648° / 32°0.04
48 °
Marietta, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.04 in
Chance of precipitation25%
Record high69° (2001)
Record low13° (1997)
Tue, 1748° / 33°0.1
48 °
Marietta, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.1 in
Chance of precipitation28%
Record high72° (2016)
Record low11° (2005)
Wed, 1847° / 33°0.06
47 °
Marietta, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.06 in
Chance of precipitation22%
Record high72° (1999)
Record low9° (2014)
Thu, 1947° / 32°0.07
47 °
Marietta, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.07 in
Chance of precipitation27%
Record high66° (2020)
Record low15° (1972)
Fri, 2044° / 31°0.08
44 °
Marietta, Friday, 20 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.08 in
Chance of precipitation28%
Record high65° (2003)
Record low11° (1964)
Sat, 2144° / 28°0.06
44 °
Marietta, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.06 in
Chance of precipitation22%
Record high71° (1990)
Record low6° (1964)
Sun, 2244° / 29°0.02
44 °
Marietta, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.02 in
Chance of precipitation18%
Record high68° (1966)
Record low4° (2015)
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 Marietta, 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 Marietta, 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.