Monthly outlook for Grand River, IA: average high 64.6°, average low 49.1°. That is 4.4° above the climate normal for October. Precipitation is expected on 4 days (about 1.9 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 22 October (77.4°), the coolest 5 November (36.1°).
64.6°/49.1°
Average high / low
+4.4°
Above normal
4 / 4
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
70°
58.4°
+6.4°
1 November – 10 November
55.7°
53.3°
+1.3°
11 November – 20 November
at normal
48.9°
—
October records over 66 years
93°5 October 1963All-time high
11.8°29 October 1980All-time low
Climate normals and records are computed from the nearest reference point — Kellerton (9 mi).
Fri, 2376° / 54°0
76 °
Grand River, Friday, 23 October
Mostly clear. High 76°, low 54°.
Pressure30.18 inHg
Wind10 mph SE
Humidity53%
Visibility6.2 mi
Dew point52°
Sat, 2475° / 57°0
75 °
Grand River, Saturday, 24 October
Clear. High 75°, low 57°.
Pressure30.24 inHg
Wind11 mph S
Humidity50%
Visibility6.2 mi
Dew point51°
Sun, 2576° / 55°0
76 °
Grand River, Sunday, 25 October
Partly cloudy. High 76°, low 55°.
Pressure30.33 inHg
Wind5.7 mph SW
Humidity55%
Visibility6.2 mi
Dew point55°
Mon, 2673° / 57°0
73 °
Grand River, Monday, 26 October
Overcast. High 73°, low 57°.
Pressure30.30 inHg
Wind7.8 mph SE
Humidity52%
Visibility—
Dew point50°
Tue, 2770° / 55°0.09
70 °
Grand River, Tuesday, 27 October
Light rain. High 70°, low 55°.
Pressure30.18 inHg
Wind12 mph S
Humidity50%
Visibility—
Dew point47°
Wed, 2861° / 44°0
61 °
Grand River, Wednesday, 28 October
Partly cloudy. High 61°, low 44°.
Pressure30.18 inHg
Wind7.9 mph W
Humidity65%
Visibility—
Dew point45°
Thu, 2961° / 52°1.04
61 °
Grand River, Thursday, 29 October
Rain. High 61°, low 52°.
Pressure30.00 inHg
Wind12.3 mph SE
Humidity91%
Visibility—
Dew point54°
Fri, 3065° / 56°0.41
65 °
Grand River, Friday, 30 October
Rain. High 65°, low 56°.
Pressure29.77 inHg
Wind9 mph SE
Humidity85%
Visibility—
Dew point59°
Sat, 3164° / 53°0.31
64 °
Grand River, Saturday, 31 October
Rain. High 64°, low 53°.
Pressure29.80 inHg
Wind8.3 mph N
Humidity61%
Visibility—
Dew point47°
Sun, 0164° / 49°0
64 °
Grand River, Sunday, 1 November
Clear. High 64°, low 49°.
Pressure30.00 inHg
Wind9.8 mph NW
Humidity46%
Visibility—
Dew point40°
Mon, 0257° / 44°0
57 °
Grand River, Monday, 2 November
Mostly clear. High 57°, low 44°.
Pressure30.24 inHg
Wind12.5 mph NE
Humidity51%
Visibility—
Dew point37°
Tue, 0354° / 38°0
54 °
Grand River, Tuesday, 3 November
Partly cloudy. High 54°, low 38°.
Pressure30.39 inHg
Wind8.2 mph NE
Humidity51%
Visibility—
Dew point34°
Wed, 0453° / 37°0
53 °
Grand River, Wednesday, 4 November
Overcast. High 53°, low 37°.
Pressure30.42 inHg
Wind11.2 mph E
Humidity53%
Visibility—
Dew point33°
Thu, 0548° / 36°0
48 °
Grand River, Thursday, 5 November
Partly cloudy. High 48°, low 36°.
Pressure30.33 inHg
Wind8.7 mph NE
Humidity70%
Visibility—
Dew point34°
Fri, 0658° / 44°0
58 °
Grand River, Friday, 6 November
Overcast. High 58°, low 44°.
Pressure30.21 inHg
Wind4.8 mph E
Humidity68%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0753° / 37°0.02
53 °
Grand River, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.02 in
Chance of precipitation8%
Record high72° (1966)
Record low-2° (1991)
Sun, 0853° / 37°0.04
53 °
Grand River, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.04 in
Chance of precipitation18%
Record high75° (1999)
Record low-10° (1991)
Mon, 0953° / 37°0.1
53 °
Grand River, Monday, 9 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.1 in
Chance of precipitation33%
Record high72° (1999)
Record low15° (1991)
Tue, 1050° / 35°0.1
50 °
Grand River, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.1 in
Chance of precipitation25%
Record high74° (2012)
Record low12° (2018)
Wed, 1149° / 32°0.07
49 °
Grand River, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.07 in
Chance of precipitation22%
Record high73° (1964)
Record low10° (1986)
Thu, 1247° / 32°0.06
47 °
Grand River, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.06 in
Chance of precipitation23%
Record high68° (1999)
Record low3° (1968)
Fri, 1349° / 32°0.07
49 °
Grand River, Friday, 13 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.07 in
Chance of precipitation17%
Record high75° (1999)
Record low5° (1986)
Sat, 1449° / 34°0.03
49 °
Grand River, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.03 in
Chance of precipitation18%
Record high72° (2025)
Record low13° (2014)
Sun, 1549° / 34°0.06
49 °
Grand River, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.06 in
Chance of precipitation20%
Record high70° (2025)
Record low0° (1972)
Mon, 1650° / 33°0.04
50 °
Grand River, 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 low15° (2014)
Tue, 1751° / 35°0.12
51 °
Grand River, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.12 in
Chance of precipitation23%
Record high72° (2016)
Record low14° (2005)
Wed, 1849° / 35°0.05
49 °
Grand River, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.05 in
Chance of precipitation25%
Record high71° (1999)
Record low11° (2014)
Thu, 1950° / 34°0.07
50 °
Grand River, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.07 in
Chance of precipitation20%
Record high69° (2007)
Record low18° (1985)
Fri, 2047° / 32°0.08
47 °
Grand River, Friday, 20 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.08 in
Chance of precipitation22%
Record high65° (1990)
Record low13° (1985)
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 Grand River, 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 Grand River, 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.