Monthly outlook for Neptune, IA: average high 59.6°, average low 45.7°. That is 2.4° above the climate normal for October. Precipitation is expected on 6 days (about 3.1 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 22 October (75.6°), the coolest 29 October (34.3°).
59.6°/45.7°
Average high / low
+2.4°
Above normal
6 / 4
Wet days / normal
3.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
62°
57.1°
+2.7°
31 October – 9 November
55.5°
51.3°
+2.3°
10 November – 19 November
at normal
45.9°
—
October records over 66 years
88.9°3 October 2025All-time high
16.5°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Kingsley (11 mi).
Thu, 2276° / 50°0
76 °
Neptune, Thursday, 22 October
Clear. High 76°, low 50°.
Pressure30.18 inHg
Wind6.7 mph S
Humidity68%
Visibility6.2 mi
Dew point58°
Fri, 2373° / 54°0.1
73 °
Neptune, Friday, 23 October
Rain. High 73°, low 54°.
Pressure30.06 inHg
Wind10.8 mph S
Humidity64%
Visibility6.2 mi
Dew point52°
Sat, 2474° / 58°0
74 °
Neptune, Saturday, 24 October
Partly cloudy. High 74°, low 58°.
Pressure30.15 inHg
Wind10.9 mph S
Humidity53%
Visibility6.2 mi
Dew point52°
Sun, 2569° / 52°0.03
69 °
Neptune, Sunday, 25 October
Light rain. High 69°, low 52°.
Pressure30.30 inHg
Wind7.6 mph E
Humidity69%
Visibility6.2 mi
Dew point51°
Mon, 2661° / 45°0.92
61 °
Neptune, Monday, 26 October
Rain. High 61°, low 45°.
Pressure30.18 inHg
Wind13 mph NW
Humidity91%
Visibility—
Dew point51°
Tue, 2744° / 42°0.14
44 °
Neptune, Tuesday, 27 October
Light rain. High 44°, low 42°.
Pressure30.24 inHg
Wind11.6 mph NW
Humidity88%
Visibility—
Dew point40°
Wed, 2847° / 39°0
47 °
Neptune, Wednesday, 28 October
Overcast. High 47°, low 39°.
Pressure30.33 inHg
Wind13.8 mph NW
Humidity72%
Visibility—
Dew point33°
Thu, 2948° / 34°0
48 °
Neptune, Thursday, 29 October
Clear. High 48°, low 34°.
Pressure30.42 inHg
Wind7.8 mph S
Humidity47%
Visibility—
Dew point25°
Fri, 3054° / 40°0
54 °
Neptune, Friday, 30 October
Overcast. High 54°, low 40°.
Pressure29.91 inHg
Wind19.1 mph S
Humidity66%
Visibility—
Dew point40°
Sat, 3164° / 45°0
64 °
Neptune, Saturday, 31 October
Overcast. High 64°, low 45°.
Pressure29.88 inHg
Wind9.6 mph S
Humidity42%
Visibility—
Dew point37°
Sun, 0156° / 54°0.32
56 °
Neptune, Sunday, 1 November
Light rain. High 56°, low 54°.
Pressure30.09 inHg
Wind9.1 mph SE
Humidity97%
Visibility—
Dew point55°
Mon, 0254° / 53°1.1
54 °
Neptune, Monday, 2 November
Rain. High 54°, low 53°.
Pressure29.94 inHg
Wind17.7 mph NE
Humidity95%
Visibility—
Dew point52°
Tue, 0354° / 42°0.51
54 °
Neptune, Tuesday, 3 November
Rain. High 54°, low 42°.
Pressure30.18 inHg
Wind18.2 mph NE
Humidity59%
Visibility—
Dew point39°
Wed, 0451° / 35°0
51 °
Neptune, Wednesday, 4 November
Clear. High 51°, low 35°.
Pressure30.33 inHg
Wind7.2 mph NE
Humidity57%
Visibility—
Dew point31°
Thu, 0555° / 38°0
55 °
Neptune, Thursday, 5 November
Clear. High 55°, low 38°.
Pressure30.09 inHg
Wind7.7 mph S
Humidity62%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0651° / 35°0.03
51 °
Neptune, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.03 in
Chance of precipitation10%
Record high71° (2020)
Record low7° (1991)
Sat, 0751° / 34°0.02
51 °
Neptune, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.02 in
Chance of precipitation10%
Record high73° (2001)
Record low-11° (1991)
Sun, 0851° / 34°0.05
51 °
Neptune, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.05 in
Chance of precipitation18%
Record high78° (1999)
Record low-5° (1991)
Mon, 0949° / 34°0.15
49 °
Neptune, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.15 in
Chance of precipitation28%
Record high73° (1999)
Record low15° (2018)
Tue, 1046° / 31°0.08
46 °
Neptune, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.08 in
Chance of precipitation27%
Record high72° (2012)
Record low11° (2018)
Wed, 1145° / 29°0.07
45 °
Neptune, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.07 in
Chance of precipitation17%
Record high67° (1964)
Record low4° (1986)
Thu, 1244° / 29°0.05
44 °
Neptune, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.05 in
Chance of precipitation22%
Record high67° (1999)
Record low6° (2019)
Fri, 1346° / 30°0.04
46 °
Neptune, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.04 in
Chance of precipitation22%
Record high73° (1999)
Record low3° (1986)
Sat, 1446° / 31°0.02
46 °
Neptune, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.02 in
Chance of precipitation17%
Record high70° (2025)
Record low8° (2014)
Sun, 1547° / 30°0.06
47 °
Neptune, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.06 in
Chance of precipitation20%
Record high70° (2001)
Record low4° (2000)
Mon, 1647° / 30°0.08
47 °
Neptune, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.08 in
Chance of precipitation17%
Record high71° (2001)
Record low4° (2014)
Tue, 1746° / 31°0.07
46 °
Neptune, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.07 in
Chance of precipitation22%
Record high67° (2001)
Record low6° (2000)
Wed, 1846° / 30°0.07
46 °
Neptune, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.07 in
Chance of precipitation25%
Record high72° (1999)
Record low6° (2000)
Thu, 1945° / 30°0.08
45 °
Neptune, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.08 in
Chance of precipitation25%
Record high64° (2003)
Record low7° (1978)
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 Neptune, 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 Neptune, 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.