Monthly outlook for Greenville, IA: average high 65.4°, average low 47.6°. That is 5.6° above the climate normal for October. Precipitation is expected on 0 days (about 0.1 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 1 November (74.9°), the coolest 25 October (39.1°).
65.4°/47.6°
Average high / low
+5.6°
Above normal
0 / 4
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
64.1°
57°
+3.9°
28 October – 6 November
67.7°
51.6°
+8.9°
7 November – 16 November
at normal
45.9°
—
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).
Mon, 1963° / 43°0
63 °
Greenville, Monday, 19 October
Partly cloudy. High 63°, low 43°.
Pressure30.30 inHg
Wind6 mph S
Humidity65%
Visibility6.2 mi
Dew point46°
Tue, 2065° / 45°0
65 °
Greenville, Tuesday, 20 October
Clear. High 65°, low 45°.
Pressure30.27 inHg
Wind9.6 mph S
Humidity58%
Visibility6.2 mi
Dew point46°
Wed, 2170° / 51°0
70 °
Greenville, Wednesday, 21 October
Clear. High 70°, low 51°.
Pressure30.18 inHg
Wind7.5 mph S
Humidity63%
Visibility6.2 mi
Dew point52°
Thu, 2271° / 50°0
71 °
Greenville, Thursday, 22 October
Clear. High 71°, low 50°.
Pressure30.21 inHg
Wind9.9 mph SE
Humidity53%
Visibility—
Dew point49°
Fri, 2369° / 53°0.02
69 °
Greenville, Friday, 23 October
Light rain. High 69°, low 53°.
Pressure30.12 inHg
Wind18 mph SE
Humidity53%
Visibility—
Dew point47°
Sat, 2465° / 48°0.01
65 °
Greenville, Saturday, 24 October
Light rain. High 65°, low 48°.
Pressure30.12 inHg
Wind20.1 mph S
Humidity59%
Visibility—
Dew point46°
Sun, 2553° / 39°0
53 °
Greenville, Sunday, 25 October
Mostly clear. High 53°, low 39°.
Pressure30.53 inHg
Wind11 mph NW
Humidity31%
Visibility—
Dew point20°
Mon, 2657° / 40°0
57 °
Greenville, Monday, 26 October
Partly cloudy. High 57°, low 40°.
Pressure30.18 inHg
Wind17.2 mph S
Humidity42%
Visibility—
Dew point31°
Tue, 2763° / 48°0.02
63 °
Greenville, Tuesday, 27 October
Light rain. High 63°, low 48°.
Pressure30.06 inHg
Wind10 mph S
Humidity66%
Visibility—
Dew point49°
Wed, 2868° / 54°0.02
68 °
Greenville, Wednesday, 28 October
Light rain. High 68°, low 54°.
Pressure29.77 inHg
Wind15.6 mph S
Humidity77%
Visibility—
Dew point55°
Thu, 2964° / 48°0
64 °
Greenville, Thursday, 29 October
Clear. High 64°, low 48°.
Pressure29.77 inHg
Wind6.8 mph W
Humidity32%
Visibility—
Dew point30°
Fri, 3068° / 50°0
68 °
Greenville, Friday, 30 October
Overcast. High 68°, low 50°.
Pressure29.56 inHg
Wind16.5 mph SW
Humidity43%
Visibility—
Dew point41°
Sat, 3168° / 50°0
68 °
Greenville, Saturday, 31 October
Overcast. High 68°, low 50°.
Pressure29.62 inHg
Wind12.5 mph SW
Humidity32%
Visibility—
Dew point34°
Sun, 0175° / 53°0
75 °
Greenville, Sunday, 1 November
Partly cloudy. High 75°, low 53°.
Pressure29.85 inHg
Wind8.1 mph N
Humidity26%
Visibility—
Dew point32°
Mon, 0263° / 46°0
63 °
Greenville, Monday, 2 November
Mostly clear. High 63°, low 46°.
Pressure30.27 inHg
Wind11.5 mph E
Humidity34%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0350° / 35°0.06
50 °
Greenville, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.06 in
Chance of precipitation18%
Record high73° (1978)
Record low4° (1991)
Wed, 0450° / 34°0.03
50 °
Greenville, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.03 in
Chance of precipitation20%
Record high70° (2020)
Record low-12° (1991)
Thu, 0550° / 34°0.06
50 °
Greenville, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.06 in
Chance of precipitation22%
Record high69° (2020)
Record low15° (1991)
Fri, 0650° / 35°0.04
50 °
Greenville, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.04 in
Chance of precipitation23%
Record high71° (2020)
Record low4° (1991)
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)
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.