Monthly outlook for Sunbury, IA: average high 63.6°, average low 50.7°. That is 1.6° above the climate normal for October. Precipitation is expected on 6 days (about 2.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 12 October (85.7°), the coolest 18 October (35.4°).
63.6°/50.7°
Average high / low
+1.6°
Above normal
6 / 5
Wet days / normal
2.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
66.4°
61.8°
+2.6°
21 October – 30 October
59°
57.9°
+0.6°
31 October – 9 November
at normal
53°
—
October records over 66 years
89.1°6 October 1963All-time high
17.4°30 October 1980All-time low
Climate normals and records are computed from the nearest reference point — Plainview (8 mi).
Mon, 1286° / 65°0
86 °
Sunbury, Monday, 12 October
Overcast. High 86°, low 65°.
Pressure29.80 inHg
Wind12.7 mph SW
Humidity60%
Visibility6.2 mi
Dew point64°
Tue, 1377° / 63°0.03
77 °
Sunbury, Tuesday, 13 October
Light rain. High 77°, low 63°.
Pressure29.85 inHg
Wind5.5 mph NW
Humidity66%
Visibility6.2 mi
Dew point62°
Wed, 1470° / 59°0.08
70 °
Sunbury, Wednesday, 14 October
Light rain. High 70°, low 59°.
Pressure30.09 inHg
Wind9.2 mph NE
Humidity61%
Visibility6.2 mi
Dew point55°
Thu, 1562° / 57°1.58
62 °
Sunbury, Thursday, 15 October
Heavy rain. High 62°, low 57°.
Pressure30.00 inHg
Wind8.5 mph NE
Humidity95%
Visibility1.6 mi
Dew point57°
Fri, 1658° / 46°0
58 °
Sunbury, Friday, 16 October
Clear. High 58°, low 46°.
Pressure30.50 inHg
Wind19 mph N
Humidity47%
Visibility—
Dew point36°
Sat, 1747° / 36°0
47 °
Sunbury, Saturday, 17 October
Partly cloudy. High 47°, low 36°.
Pressure30.62 inHg
Wind8 mph S
Humidity42%
Visibility—
Dew point24°
Sun, 1856° / 35°0
56 °
Sunbury, Sunday, 18 October
Clear. High 56°, low 35°.
Pressure30.39 inHg
Wind20 mph SW
Humidity42%
Visibility—
Dew point28°
Mon, 1961° / 42°0
61 °
Sunbury, Monday, 19 October
Clear. High 61°, low 42°.
Pressure30.33 inHg
Wind13.3 mph SW
Humidity43%
Visibility—
Dew point35°
Tue, 2064° / 51°0
64 °
Sunbury, Tuesday, 20 October
Overcast. High 64°, low 51°.
Pressure30.27 inHg
Wind11.5 mph S
Humidity51%
Visibility—
Dew point41°
Wed, 2162° / 58°0.13
62 °
Sunbury, Wednesday, 21 October
Light rain. High 62°, low 58°.
Pressure30.09 inHg
Wind16 mph S
Humidity81%
Visibility—
Dew point55°
Thu, 2271° / 61°0.06
71 °
Sunbury, Thursday, 22 October
Light rain. High 71°, low 61°.
Pressure30.15 inHg
Wind14.9 mph S
Humidity82%
Visibility—
Dew point59°
Fri, 2364° / 62°0.57
64 °
Sunbury, Friday, 23 October
Rain. High 64°, low 62°.
Pressure30.00 inHg
Wind18.4 mph S
Humidity93%
Visibility—
Dew point60°
Sat, 2457° / 42°0.17
57 °
Sunbury, Saturday, 24 October
Light rain. High 57°, low 42°.
Pressure30.12 inHg
Wind14.5 mph NW
Humidity87%
Visibility—
Dew point44°
Sun, 2551° / 41°0
51 °
Sunbury, Sunday, 25 October
Overcast. High 51°, low 41°.
Pressure30.18 inHg
Wind10.4 mph NW
Humidity60%
Visibility—
Dew point36°
Mon, 2649° / 37°0
49 °
Sunbury, Monday, 26 October
Clear. High 49°, low 37°.
Pressure30.03 inHg
Wind18.7 mph NW
Humidity53%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2756° / 41°0.07
56 °
Sunbury, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.07 in
Chance of precipitation20%
Record high75° (2014)
Record low23° (1997)
Wed, 2856° / 40°0.05
56 °
Sunbury, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.05 in
Chance of precipitation22%
Record high73° (2016)
Record low18° (1967)
Thu, 2956° / 41°0.06
56 °
Sunbury, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.06 in
Chance of precipitation20%
Record high79° (2024)
Record low20° (1980)
Fri, 3058° / 42°0.11
58 °
Sunbury, Friday, 30 October
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.11 in
Chance of precipitation35%
Record high76° (2024)
Record low17° (1980)
Sat, 3156° / 42°0.13
56 °
Sunbury, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.13 in
Chance of precipitation33%
Record high74° (1968)
Record low25° (2019)
Sun, 0155° / 40°0.17
55 °
Sunbury, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.17 in
Chance of precipitation35%
Record high76° (2000)
Record low22° (2023)
Mon, 0254° / 39°0.1
54 °
Sunbury, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.1 in
Chance of precipitation33%
Record high72° (2022)
Record low19° (1991)
Tue, 0353° / 38°0.06
53 °
Sunbury, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.06 in
Chance of precipitation22%
Record high72° (1987)
Record low14° (1991)
Wed, 0453° / 40°0.09
53 °
Sunbury, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.09 in
Chance of precipitation20%
Record high72° (2022)
Record low12° (1991)
Thu, 0552° / 38°0.1
52 °
Sunbury, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.1 in
Chance of precipitation22%
Record high72° (1978)
Record low19° (1991)
Fri, 0652° / 37°0.07
52 °
Sunbury, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation27%
Record high70° (2020)
Record low20° (1991)
Sat, 0752° / 36°0.02
52 °
Sunbury, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.02 in
Chance of precipitation15%
Record high70° (1966)
Record low11° (1991)
Sun, 0852° / 37°0.04
52 °
Sunbury, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.04 in
Chance of precipitation20%
Record high76° (1999)
Record low10° (1991)
Mon, 0951° / 37°0.1
51 °
Sunbury, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation35%
Record high74° (1999)
Record low16° (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 Sunbury, 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 Sunbury, 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.