Monthly outlook for Greenville, IA: average high 57.1°, average low 43.2°. That is 2.1° above the climate normal for October. Precipitation is expected on 3 days (about 1.2 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 22 October (75.8°), the coolest 28 October (33.4°).
57.1°/43.2°
Average high / low
+2.1°
Above normal
3 / 4
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
59.2°
55.2°
+2.2°
1 November – 10 November
53.6°
49.4°
+2.3°
11 November – 20 November
at normal
44°
—
October records over 66 years
89.1°3 October 2025All-time high
14.2°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Webb (8 mi).
Fri, 2371° / 51°0
71 °
Greenville, Friday, 23 October
Overcast. High 71°, low 51°.
Pressure30.09 inHg
Wind13.5 mph S
Humidity60%
Visibility6.2 mi
Dew point51°
Sat, 2471° / 57°0
71 °
Greenville, Saturday, 24 October
Overcast. High 71°, low 57°.
Pressure30.15 inHg
Wind12.6 mph SW
Humidity52%
Visibility6.2 mi
Dew point51°
Sun, 2562° / 50°0
62 °
Greenville, Sunday, 25 October
Mostly clear. High 62°, low 50°.
Pressure30.36 inHg
Wind8.5 mph NE
Humidity65%
Visibility6.2 mi
Dew point46°
Mon, 2652° / 46°0.32
52 °
Greenville, Monday, 26 October
Rain. High 52°, low 46°.
Pressure30.36 inHg
Wind10.9 mph NE
Humidity85%
Visibility—
Dew point44°
Tue, 2747° / 37°0.73
47 °
Greenville, Tuesday, 27 October
Snow. High 47°, low 37°.
Pressure30.24 inHg
Wind13.6 mph NW
Humidity82%
Visibility—
Dew point39°
Wed, 2845° / 33°0.02
45 °
Greenville, Wednesday, 28 October
Light snow. High 45°, low 33°.
Pressure30.47 inHg
Wind11.9 mph NW
Humidity59%
Visibility—
Dew point29°
Thu, 2952° / 35°0
52 °
Greenville, Thursday, 29 October
Clear. High 52°, low 35°.
Pressure30.24 inHg
Wind15.6 mph S
Humidity59%
Visibility—
Dew point33°
Fri, 3057° / 44°0
57 °
Greenville, Friday, 30 October
Overcast. High 57°, low 44°.
Pressure29.83 inHg
Wind18.8 mph S
Humidity68%
Visibility—
Dew point41°
Sat, 3158° / 52°0.1
58 °
Greenville, Saturday, 31 October
Light rain. High 58°, low 52°.
Pressure29.65 inHg
Wind16.5 mph S
Humidity69%
Visibility—
Dew point46°
Sun, 0157° / 47°0.01
57 °
Greenville, Sunday, 1 November
Light rain. High 57°, low 47°.
Pressure29.88 inHg
Wind10.8 mph SW
Humidity53%
Visibility—
Dew point39°
Mon, 0245° / 37°0
45 °
Greenville, Monday, 2 November
Clear. High 45°, low 37°.
Pressure30.36 inHg
Wind15.6 mph NW
Humidity39%
Visibility—
Dew point20°
Tue, 0352° / 37°0
52 °
Greenville, Tuesday, 3 November
Overcast. High 52°, low 37°.
Pressure30.24 inHg
Wind7.2 mph SE
Humidity42%
Visibility—
Dew point26°
Wed, 0463° / 42°0
63 °
Greenville, Wednesday, 4 November
Overcast. High 63°, low 42°.
Pressure29.44 inHg
Wind21.3 mph W
Humidity62%
Visibility—
Dew point44°
Thu, 0551° / 38°0
51 °
Greenville, Thursday, 5 November
Partly cloudy. High 51°, low 38°.
Pressure29.94 inHg
Wind28.3 mph NW
Humidity44%
Visibility—
Dew point22°
Fri, 0653° / 39°0.01
53 °
Greenville, Friday, 6 November
Light rain. High 53°, low 39°.
Pressure29.85 inHg
Wind12.9 mph S
Humidity53%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0750° / 33°0.02
50 °
Greenville, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.02 in
Chance of precipitation12%
Record high71° (2001)
Record low-16° (1991)
Sun, 0849° / 33°0.04
49 °
Greenville, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.04 in
Chance of precipitation17%
Record high75° (1999)
Record low-3° (1991)
Mon, 0948° / 33°0.14
48 °
Greenville, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.14 in
Chance of precipitation27%
Record high72° (2022)
Record low15° (2018)
Tue, 1045° / 30°0.09
45 °
Greenville, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.09 in
Chance of precipitation28%
Record high72° (2012)
Record low10° (2018)
Wed, 1144° / 28°0.07
44 °
Greenville, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.07 in
Chance of precipitation22%
Record high67° (1964)
Record low4° (1986)
Thu, 1242° / 28°0.07
42 °
Greenville, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.07 in
Chance of precipitation23%
Record high66° (2005)
Record low4° (1966)
Fri, 1345° / 29°0.06
45 °
Greenville, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.06 in
Chance of precipitation28%
Record high71° (1999)
Record low2° (1986)
Sat, 1445° / 30°0.03
45 °
Greenville, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.03 in
Chance of precipitation13%
Record high72° (2025)
Record low10° (2014)
Sun, 1546° / 29°0.06
46 °
Greenville, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (2001)
Record low8° (1976)
Mon, 1645° / 29°0.07
45 °
Greenville, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.07 in
Chance of precipitation22%
Record high70° (2001)
Record low-3° (1976)
Tue, 1744° / 30°0.07
44 °
Greenville, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.07 in
Chance of precipitation25%
Record high65° (2001)
Record low8° (2014)
Wed, 1844° / 29°0.07
44 °
Greenville, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.07 in
Chance of precipitation27%
Record high71° (1999)
Record low6° (2014)
Thu, 1943° / 29°0.08
43 °
Greenville, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.08 in
Chance of precipitation27%
Record high62° (2020)
Record low2° (1997)
Fri, 2041° / 27°0.08
41 °
Greenville, Friday, 20 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.08 in
Chance of precipitation20%
Record high63° (2003)
Record low7° (2000)
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 Greenville, 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 Greenville, 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.