Monthly outlook for Grant, IA: average high 70.8°, average low 52.2°. That is 4.3° above the climate normal for October. Precipitation is expected on 5 days (about 2.2 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 9 October (84.2°), the coolest 17 October (37.1°).
70.8°/52.2°
Average high / low
+4.3°
Above normal
5 / 4
Wet days / normal
2.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
74°
64.2°
+5.4°
18 October – 27 October
65.5°
60°
+3.1°
28 October – 6 November
at normal
54.8°
—
October records over 66 years
92.5°5 October 2024All-time high
13.6°27 October 1997All-time low
Climate normals and records are computed from the nearest reference point — Lewis (12 mi).
Fri, 0984° / 58°0.36
84 °
Grant, Friday, 9 October
Rain. High 84°, low 58°.
Pressure29.94 inHg
Wind11.2 mph SW
Humidity60%
Visibility6.2 mi
Dew point60°
Sat, 1081° / 63°0
81 °
Grant, Saturday, 10 October
Clear. High 81°, low 63°.
Pressure29.88 inHg
Wind12.8 mph S
Humidity57%
Visibility6.2 mi
Dew point60°
Sun, 1181° / 62°0
81 °
Grant, Sunday, 11 October
Partly cloudy. High 81°, low 62°.
Pressure29.85 inHg
Wind11.5 mph S
Humidity59%
Visibility6.2 mi
Dew point61°
Mon, 1280° / 66°0
80 °
Grant, Monday, 12 October
Partly cloudy. High 80°, low 66°.
Pressure29.80 inHg
Wind6.2 mph SW
Humidity59%
Visibility6.2 mi
Dew point62°
Tue, 1368° / 56°0.83
68 °
Grant, Tuesday, 13 October
Heavy rain. High 68°, low 56°.
Pressure30.00 inHg
Wind11.7 mph NE
Humidity66%
Visibility—
Dew point53°
Wed, 1482° / 60°0.5
82 °
Grant, Wednesday, 14 October
Rain. High 82°, low 60°.
Pressure29.68 inHg
Wind22.8 mph S
Humidity87%
Visibility—
Dew point67°
Thu, 1573° / 56°0
73 °
Grant, Thursday, 15 October
Overcast. High 73°, low 56°.
Pressure29.97 inHg
Wind12 mph NW
Humidity41%
Visibility—
Dew point45°
Fri, 1656° / 46°0
56 °
Grant, Friday, 16 October
Overcast. High 56°, low 46°.
Pressure30.50 inHg
Wind17.5 mph N
Humidity51%
Visibility—
Dew point35°
Sat, 1753° / 37°0
53 °
Grant, Saturday, 17 October
Overcast. High 53°, low 37°.
Pressure30.62 inHg
Wind10.3 mph N
Humidity40%
Visibility—
Dew point25°
Sun, 1857° / 37°0
57 °
Grant, Sunday, 18 October
Clear. High 57°, low 37°.
Pressure30.50 inHg
Wind10.5 mph S
Humidity39%
Visibility—
Dew point28°
Mon, 1963° / 40°0
63 °
Grant, Monday, 19 October
Partly cloudy. High 63°, low 40°.
Pressure30.27 inHg
Wind17.2 mph S
Humidity36%
Visibility—
Dew point31°
Tue, 2060° / 50°0.43
60 °
Grant, Tuesday, 20 October
Rain. High 60°, low 50°.
Pressure30.12 inHg
Wind11.8 mph SW
Humidity67%
Visibility—
Dew point48°
Wed, 2166° / 49°0
66 °
Grant, Wednesday, 21 October
Clear. High 66°, low 49°.
Pressure30.06 inHg
Wind9.6 mph NW
Humidity50%
Visibility—
Dew point44°
Thu, 2272° / 50°0
72 °
Grant, Thursday, 22 October
Clear. High 72°, low 50°.
Pressure30.15 inHg
Wind8 mph SW
Humidity44%
Visibility—
Dew point44°
Fri, 2375° / 54°0.09
75 °
Grant, Friday, 23 October
Light rain. High 75°, low 54°.
Pressure30.12 inHg
Wind8.4 mph SE
Humidity55%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2459° / 43°0.11
59 °
Grant, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.11 in
Chance of precipitation28%
Record high76° (2012)
Record low24° (2020)
Sun, 2558° / 42°0.05
58 °
Grant, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.05 in
Chance of precipitation23%
Record high78° (1989)
Record low27° (1962)
Mon, 2659° / 42°0.08
59 °
Grant, Monday, 26 October
Climate normal for this date — 60-year average.
Average high59°
Average low42°
Average precipitation0.08 in
Chance of precipitation28%
Record high76° (1989)
Record low23° (2020)
Tue, 2758° / 41°0.06
58 °
Grant, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high58°
Average low41°
Average precipitation0.06 in
Chance of precipitation17%
Record high82° (1999)
Record low14° (1997)
Wed, 2857° / 40°0.07
57 °
Grant, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high57°
Average low40°
Average precipitation0.07 in
Chance of precipitation17%
Record high79° (2016)
Record low23° (1967)
Thu, 2958° / 41°0.09
58 °
Grant, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high58°
Average low41°
Average precipitation0.09 in
Chance of precipitation23%
Record high81° (2024)
Record low19° (1980)
Fri, 3057° / 41°0.12
57 °
Grant, Friday, 30 October
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.12 in
Chance of precipitation30%
Record high76° (2024)
Record low22° (1991)
Sat, 3155° / 40°0.11
55 °
Grant, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.11 in
Chance of precipitation30%
Record high76° (1968)
Record low19° (1993)
Sun, 0155° / 39°0.16
55 °
Grant, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.16 in
Chance of precipitation32%
Record high76° (1990)
Record low21° (1991)
Mon, 0253° / 38°0.08
53 °
Grant, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.08 in
Chance of precipitation23%
Record high74° (1964)
Record low9° (1991)
Tue, 0354° / 38°0.09
54 °
Grant, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.09 in
Chance of precipitation22%
Record high76° (2022)
Record low6° (1991)
Wed, 0453° / 37°0.07
53 °
Grant, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.07 in
Chance of precipitation15%
Record high70° (1978)
Record low1° (1991)
Thu, 0553° / 37°0.05
53 °
Grant, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.05 in
Chance of precipitation22%
Record high72° (2015)
Record low19° (1967)
Fri, 0653° / 37°0.06
53 °
Grant, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation17%
Record high73° (1980)
Record low13° (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 Grant, 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 Grant, 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.