Monthly outlook for Marion, IA: average high 63.1°, average low 48.6°. That is 1.1° above the climate normal for October. Precipitation is expected on 6 days (about 1.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 12 October (82.7°), the coolest 24 October (31.4°).
63.1°/48.6°
Average high / low
+1.1°
Above normal
6 / 5
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
66.9°
62.1°
+2.7°
19 October – 28 October
56.8°
58.2°
-0.7°
29 October – 7 November
at normal
53.5°
—
October records over 66 years
90°3 October 2006All-time high
17.1°30 October 1980All-time low
Climate normals and records are computed from the nearest reference point — Cedar Rapids (7 mi).
Sat, 1080° / 61°0
80 °
Marion, Saturday, 10 October
Overcast. High 80°, low 61°.
Pressure29.97 inHg
Wind10.8 mph S
Humidity67%
Visibility6.2 mi
Dew point63°
Sun, 1178° / 56°0
78 °
Marion, Sunday, 11 October
Clear. High 78°, low 56°.
Pressure29.88 inHg
Wind8.2 mph S
Humidity59%
Visibility6.2 mi
Dew point57°
Mon, 1283° / 67°0
83 °
Marion, Monday, 12 October
Clear. High 83°, low 67°.
Pressure29.74 inHg
Wind10.9 mph SW
Humidity61%
Visibility6.2 mi
Dew point65°
Tue, 1373° / 61°0
73 °
Marion, Tuesday, 13 October
Overcast. High 73°, low 61°.
Pressure29.91 inHg
Wind7.8 mph N
Humidity72%
Visibility6.2 mi
Dew point58°
Wed, 1465° / 58°0.39
65 °
Marion, Wednesday, 14 October
Rain. High 65°, low 58°.
Pressure30.06 inHg
Wind12 mph E
Humidity62%
Visibility—
Dew point51°
Thu, 1556° / 54°0.41
56 °
Marion, Thursday, 15 October
Rain. High 56°, low 54°.
Pressure29.94 inHg
Wind12.2 mph SE
Humidity92%
Visibility—
Dew point52°
Fri, 1656° / 40°0.22
56 °
Marion, Friday, 16 October
Light rain. High 56°, low 40°.
Pressure29.94 inHg
Wind25.4 mph W
Humidity55%
Visibility—
Dew point34°
Sat, 1745° / 35°0
45 °
Marion, Saturday, 17 October
Partly cloudy. High 45°, low 35°.
Pressure30.45 inHg
Wind24.5 mph NW
Humidity51%
Visibility—
Dew point25°
Sun, 1855° / 32°0
55 °
Marion, Sunday, 18 October
Overcast. High 55°, low 32°.
Pressure30.21 inHg
Wind17.6 mph S
Humidity49%
Visibility—
Dew point29°
Mon, 1960° / 40°0
60 °
Marion, Monday, 19 October
Partly cloudy. High 60°, low 40°.
Pressure30.18 inHg
Wind6.5 mph SW
Humidity50%
Visibility—
Dew point37°
Tue, 2063° / 44°0
63 °
Marion, Tuesday, 20 October
Mostly clear. High 63°, low 44°.
Pressure30.27 inHg
Wind11.6 mph S
Humidity48%
Visibility—
Dew point40°
Wed, 2157° / 50°0.06
57 °
Marion, Wednesday, 21 October
Light rain. High 57°, low 50°.
Pressure30.15 inHg
Wind10 mph S
Humidity65%
Visibility—
Dew point45°
Thu, 2266° / 52°0.19
66 °
Marion, Thursday, 22 October
Light rain. High 66°, low 52°.
Pressure29.88 inHg
Wind15.5 mph NW
Humidity93%
Visibility—
Dew point58°
Fri, 2349° / 39°0
49 °
Marion, Friday, 23 October
Overcast. High 49°, low 39°.
Pressure30.09 inHg
Wind20.9 mph NW
Humidity54%
Visibility—
Dew point29°
Sat, 2444° / 31°0
44 °
Marion, Saturday, 24 October
Clear. High 44°, low 31°.
Pressure30.30 inHg
Wind10.8 mph NW
Humidity54%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2557° / 42°0.06
57 °
Marion, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.06 in
Chance of precipitation27%
Record high76° (1989)
Record low28° (2013)
Mon, 2657° / 41°0.09
57 °
Marion, Monday, 26 October
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.09 in
Chance of precipitation23%
Record high74° (1963)
Record low23° (1962)
Tue, 2756° / 41°0.07
56 °
Marion, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.07 in
Chance of precipitation20%
Record high74° (2014)
Record low21° (1997)
Wed, 2855° / 40°0.06
55 °
Marion, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.06 in
Chance of precipitation23%
Record high75° (2016)
Record low20° (1967)
Thu, 2956° / 40°0.09
56 °
Marion, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.09 in
Chance of precipitation28%
Record high80° (2024)
Record low21° (1980)
Fri, 3057° / 41°0.09
57 °
Marion, Friday, 30 October
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.09 in
Chance of precipitation32%
Record high76° (2024)
Record low17° (1980)
Sat, 3155° / 41°0.13
55 °
Marion, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.13 in
Chance of precipitation30%
Record high75° (1968)
Record low24° (1993)
Sun, 0155° / 39°0.21
55 °
Marion, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.21 in
Chance of precipitation35%
Record high75° (2000)
Record low22° (2023)
Mon, 0253° / 38°0.11
53 °
Marion, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.11 in
Chance of precipitation33%
Record high72° (2022)
Record low17° (1991)
Tue, 0353° / 38°0.06
53 °
Marion, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.06 in
Chance of precipitation17%
Record high73° (1987)
Record low13° (1991)
Wed, 0452° / 38°0.11
52 °
Marion, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.11 in
Chance of precipitation25%
Record high70° (2008)
Record low10° (1991)
Thu, 0552° / 37°0.09
52 °
Marion, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (2015)
Record low18° (1991)
Fri, 0652° / 37°0.06
52 °
Marion, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.06 in
Chance of precipitation25%
Record high70° (2020)
Record low17° (1991)
Sat, 0751° / 35°0.02
51 °
Marion, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.02 in
Chance of precipitation13%
Record high71° (1966)
Record low3° (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 Marion, 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 Marion, 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.