Monthly outlook for Green Castle, IA: average high 60.5°, average low 48.1°. That is 5.1° above the climate normal for October. Precipitation is expected on 6 days (about 3.1 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 3 November (68.8°), the coolest 14 November (34.3°).
60.5°/48.1°
Average high / low
+5.1°
Above normal
6 / 4
Wet days / normal
3.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
30 October – 8 November
62.4°
53.3°
+5°
9 November – 18 November
57.3°
48.3°
+5°
19 November – 28 November
at normal
43.2°
—
October records over 66 years
89.2°6 October 1963All-time high
9.7°29 October 1980All-time low
Climate normals and records are computed from the nearest reference point — Mitchellville (8 mi).
Sat, 3164° / 52°0.28
64 °
Green Castle, Saturday, 31 October
Rain. High 64°, low 52°.
Pressure30.24 inHg
Wind6.5 mph S
Humidity87%
Visibility6.2 mi
Dew point59°
Sun, 0167° / 52°0
67 °
Green Castle, Sunday, 1 November
Overcast. High 67°, low 52°.
Pressure30.24 inHg
Wind8 mph SE
Humidity70%
Visibility6.2 mi
Dew point52°
Mon, 0265° / 56°0.22
65 °
Green Castle, Monday, 2 November
Rain. High 65°, low 56°.
Pressure29.91 inHg
Wind19.1 mph SE
Humidity75%
Visibility6.2 mi
Dew point55°
Tue, 0369° / 63°0.43
69 °
Green Castle, Tuesday, 3 November
Rain. High 69°, low 63°.
Pressure29.74 inHg
Wind11.3 mph S
Humidity89%
Visibility3.5 mi
Dew point63°
Wed, 0458° / 48°0.71
58 °
Green Castle, Wednesday, 4 November
Rain. High 58°, low 48°.
Pressure29.88 inHg
Wind14.9 mph N
Humidity95%
Visibility—
Dew point49°
Thu, 0560° / 49°0.08
60 °
Green Castle, Thursday, 5 November
Light rain. High 60°, low 49°.
Pressure29.85 inHg
Wind14.3 mph N
Humidity61%
Visibility—
Dew point44°
Fri, 0660° / 46°0
60 °
Green Castle, Friday, 6 November
Clear. High 60°, low 46°.
Pressure30.06 inHg
Wind6.5 mph SE
Humidity68%
Visibility—
Dew point46°
Sat, 0761° / 46°0
61 °
Green Castle, Saturday, 7 November
Partly cloudy. High 61°, low 46°.
Pressure30.06 inHg
Wind10.3 mph SE
Humidity66%
Visibility—
Dew point46°
Sun, 0862° / 49°0
62 °
Green Castle, Sunday, 8 November
Overcast. High 62°, low 49°.
Pressure30.15 inHg
Wind4.5 mph SE
Humidity62%
Visibility—
Dew point46°
Mon, 0963° / 46°0
63 °
Green Castle, Monday, 9 November
Clear. High 63°, low 46°.
Pressure30.12 inHg
Wind7.4 mph W
Humidity45%
Visibility—
Dew point37°
Tue, 1067° / 48°0
67 °
Green Castle, Tuesday, 10 November
Clear. High 67°, low 48°.
Pressure29.94 inHg
Wind10.3 mph SW
Humidity47%
Visibility—
Dew point42°
Wed, 1161° / 49°0
61 °
Green Castle, Wednesday, 11 November
Overcast. High 61°, low 49°.
Pressure29.91 inHg
Wind11.3 mph N
Humidity51%
Visibility—
Dew point41°
Thu, 1259° / 44°0
59 °
Green Castle, Thursday, 12 November
Clear. High 59°, low 44°.
Pressure29.83 inHg
Wind19.6 mph NW
Humidity40%
Visibility—
Dew point33°
Fri, 1346° / 38°0
46 °
Green Castle, Friday, 13 November
Partly cloudy. High 46°, low 38°.
Pressure30.12 inHg
Wind16.9 mph NW
Humidity58%
Visibility—
Dew point31°
Sat, 1448° / 34°0
48 °
Green Castle, Saturday, 14 November
Partly cloudy. High 48°, low 34°.
Pressure30.12 inHg
Wind6 mph SE
Humidity45%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 1548° / 33°0.06
48 °
Green Castle, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation23%
Record high70° (2001)
Record low4° (1972)
Mon, 1648° / 32°0.05
48 °
Green Castle, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.05 in
Chance of precipitation22%
Record high70° (2001)
Record low14° (1997)
Tue, 1749° / 33°0.1
49 °
Green Castle, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.1 in
Chance of precipitation27%
Record high72° (2016)
Record low12° (2005)
Wed, 1848° / 33°0.06
48 °
Green Castle, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation28%
Record high72° (1999)
Record low9° (2014)
Thu, 1948° / 32°0.07
48 °
Green Castle, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.07 in
Chance of precipitation23%
Record high68° (2020)
Record low16° (1972)
Fri, 2045° / 31°0.08
45 °
Green Castle, Friday, 20 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.08 in
Chance of precipitation27%
Record high65° (2003)
Record low12° (1964)
Sat, 2144° / 29°0.04
44 °
Green Castle, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.04 in
Chance of precipitation22%
Record high71° (1990)
Record low7° (1964)
Sun, 2245° / 29°0.03
45 °
Green Castle, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.03 in
Chance of precipitation20%
Record high69° (1966)
Record low4° (2015)
Mon, 2344° / 29°0.1
44 °
Green Castle, Monday, 23 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.1 in
Chance of precipitation27%
Record high66° (1966)
Record low9° (1970)
Tue, 2444° / 28°0.04
44 °
Green Castle, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.04 in
Chance of precipitation20%
Record high66° (2017)
Record low8° (1985)
Wed, 2542° / 28°0.06
42 °
Green Castle, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.06 in
Chance of precipitation23%
Record high60° (1960)
Record low-5° (1991)
Thu, 2642° / 28°0.09
42 °
Green Castle, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.09 in
Chance of precipitation35%
Record high67° (1990)
Record low2° (1977)
Fri, 2740° / 26°0.09
40 °
Green Castle, Friday, 27 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.09 in
Chance of precipitation35%
Record high67° (1990)
Record low4° (1992)
Sat, 2839° / 24°0.07
39 °
Green Castle, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high39°
Average low24°
Average precipitation0.07 in
Chance of precipitation17%
Record high65° (1998)
Record low4° (1995)
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 Green Castle, 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 Green Castle, 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.