As of 06:17 CDT

Weather in Marietta, IA

52°

Marietta, Thursday, 22 October, 06:17

Clear. Feels like 51°. High 76°, low 52°.

Pressure30.21 inHg

Wind2 mph SE

Humidity88%

Visibility6.2 mi

Dew point48°

See detailed hourly forecast

Monthly outlook for Marietta, IA: average high 62.2°, average low 48°. That is 3.7° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 22 October (76.3°), the coolest 5 November (36.6°).

62.2°/48°

Average high / low

+3.7°

Above normal

2 / 4

Wet days / normal

0.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
22 October – 31 October	66.3°	57.2°	+5.1°
1 November – 10 November	55.3°	51.8°	+1.9°
11 November – 20 November	at normal	46.9°	—

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).

Fri, 2374° / 51°

74 °

Marietta, Friday, 23 October

Overcast. High 74°, low 51°.

Pressure30.21 inHg

Wind10.2 mph S

Humidity53%

Visibility6.2 mi

Dew point51°

Sat, 2473° / 57°

73 °

Marietta, Saturday, 24 October

Overcast. High 73°, low 57°.

Pressure30.24 inHg

Wind11 mph S

Humidity54%

Visibility6.2 mi

Dew point52°

Sun, 2573° / 54°

73 °

Marietta, Sunday, 25 October

Overcast. High 73°, low 54°.

Pressure30.36 inHg

Wind1.6 mph S

Humidity64%

Visibility6.2 mi

Dew point55°

Mon, 2669° / 54°

69 °

Marietta, Monday, 26 October

Overcast. High 69°, low 54°.

Pressure30.33 inHg

Wind8.8 mph E

Humidity68%

Visibility—

Dew point53°

Tue, 2765° / 54°

0.02

65 °

Marietta, Tuesday, 27 October

Light rain. High 65°, low 54°.

Pressure30.21 inHg

Wind10.9 mph SE

Humidity70%

Visibility—

Dew point51°

Wed, 2857° / 47°

57 °

Marietta, Wednesday, 28 October

Overcast. High 57°, low 47°.

Pressure30.21 inHg

Wind5.7 mph SW

Humidity78%

Visibility—

Dew point47°

Thu, 2953° / 50°

0.2

53 °

Marietta, Thursday, 29 October

Light rain. High 53°, low 50°.

Pressure30.09 inHg

Wind9.5 mph SE

Humidity94%

Visibility—

Dew point50°

Fri, 3061° / 54°

0.07

61 °

Marietta, Friday, 30 October

Light rain. High 61°, low 54°.

Pressure29.77 inHg

Wind10.5 mph SE

Humidity94%

Visibility—

Dew point57°

Sat, 3162° / 49°

62 °

Marietta, Saturday, 31 October

Overcast. High 62°, low 49°.

Pressure29.80 inHg

Wind8.1 mph W

Humidity61%

Visibility—

Dew point45°

Sun, 0161° / 46°

61 °

Marietta, Sunday, 1 November

Clear. High 61°, low 46°.

Pressure30.00 inHg

Wind10.6 mph NW

Humidity45%

Visibility—

Dew point37°

Mon, 0255° / 43°

55 °

Marietta, Monday, 2 November

Overcast. High 55°, low 43°.

Pressure30.27 inHg

Wind9.7 mph NE

Humidity50%

Visibility—

Dew point35°

Tue, 0354° / 39°

54 °

Marietta, Tuesday, 3 November

Overcast. High 54°, low 39°.

Pressure30.42 inHg

Wind6.7 mph E

Humidity47%

Visibility—

Dew point31°

Wed, 0453° / 39°

53 °

Marietta, Wednesday, 4 November

Overcast. High 53°, low 39°.

Pressure30.45 inHg

Wind10.7 mph E

Humidity55%

Visibility—

Dew point34°

Thu, 0551° / 37°

51 °

Marietta, Thursday, 5 November

Overcast. High 51°, low 37°.

Pressure30.33 inHg

Wind8.8 mph E

Humidity50%

Visibility—

Dew point31°

Fri, 0657° / 42°

57 °

Marietta, Friday, 6 November

Clear. High 57°, low 42°.

Pressure30.24 inHg

Wind4.9 mph SE

Humidity56%

Visibility—

Dew point38°

From day 17 onward the outlook is built from 60-year climate statistics

Sat, 0752° / 35°

0.02

52 °

Marietta, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°

Average low35°

Average precipitation0.02 in

Chance of precipitation10%

Record high72° (2001)

Record low4° (1991)

Sun, 0851° / 35°

0.04

51 °

Marietta, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high51°

Average low35°

Average precipitation0.04 in

Chance of precipitation17%

Record high77° (1999)

Record low9° (1991)

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)

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.