As of 08:50 CDT

Weather in Neptune, IA

44°Current weather

Neptune, Friday, 16 October, 08:50

Overcast. Feels like 36°. High 49°, low 37°.

Pressure30.50 inHg
Wind22.3 mph N
Humidity69%
Visibility6.2 mi
Dew point35°

Monthly outlook for Neptune, IA: average high 58.7°, average low 44.6°. That is 0.5° above the climate normal for October. Precipitation is expected on 7 days (about 2.6 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 24 October (69.9°), the coolest 17 October (33.6°).

58.7°/44.6°
Average high / low
+0.5°
Above normal
7 / 4
Wet days / normal
2.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
16 October – 25 October63°59.2°+2.1°
26 October – 4 November51.5°53.9°-1.3°
5 November – 14 Novemberat normal48.1°—

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).

Sat, 1757° / 34°0Clear
57 °Clear

Neptune, Saturday, 17 October

Clear. High 57°, low 34°.

Pressure30.45 inHg
Wind13.8 mph S
Humidity45%
Visibility6.2 mi
Dew point32°
Sun, 1863° / 43°0Clear
63 °Clear

Neptune, Sunday, 18 October

Clear. High 63°, low 43°.

Pressure30.21 inHg
Wind14.5 mph S
Humidity56%
Visibility6.2 mi
Dew point40°
Mon, 1961° / 46°0Overcast
61 °Overcast

Neptune, Monday, 19 October

Overcast. High 61°, low 46°.

Pressure30.21 inHg
Wind11.1 mph S
Humidity68%
Visibility6.2 mi
Dew point46°
Tue, 2067° / 48°0Clear
67 °Clear

Neptune, Tuesday, 20 October

Clear. High 67°, low 48°.

Pressure30.18 inHg
Wind13.6 mph S
Humidity54%
Visibility—
Dew point45°
Wed, 2169° / 53°0.04Light rain
69 °Light rain

Neptune, Wednesday, 21 October

Light rain. High 69°, low 53°.

Pressure30.12 inHg
Wind11.6 mph S
Humidity60%
Visibility—
Dew point50°
Thu, 2269° / 54°0Clear
69 °Clear

Neptune, Thursday, 22 October

Clear. High 69°, low 54°.

Pressure30.15 inHg
Wind12.2 mph NE
Humidity44%
Visibility—
Dew point43°
Fri, 2369° / 49°0Light rain
69 °Light rain

Neptune, Friday, 23 October

Light rain. High 69°, low 49°.

Pressure30.09 inHg
Wind19.3 mph SE
Humidity63%
Visibility—
Dew point51°
Sat, 2470° / 59°0.04Light rain
70 °Light rain

Neptune, Saturday, 24 October

Light rain. High 70°, low 59°.

Pressure30.03 inHg
Wind17.2 mph S
Humidity55%
Visibility—
Dew point52°
Sun, 2555° / 44°0.28Rain
55 °Rain

Neptune, Sunday, 25 October

Rain. High 55°, low 44°.

Pressure30.18 inHg
Wind20.5 mph NE
Humidity89%
Visibility—
Dew point43°
Mon, 2647° / 39°0.35Rain
47 °Rain

Neptune, Monday, 26 October

Rain. High 47°, low 39°.

Pressure30.15 inHg
Wind15.1 mph NE
Humidity86%
Visibility—
Dew point36°
Tue, 2745° / 34°0.16Rain
45 °Rain

Neptune, Tuesday, 27 October

Rain. High 45°, low 34°.

Pressure30.24 inHg
Wind8.3 mph SE
Humidity66%
Visibility—
Dew point32°
Wed, 2858° / 43°1.17Rain
58 °Rain

Neptune, Wednesday, 28 October

Rain. High 58°, low 43°.

Pressure29.80 inHg
Wind18.5 mph S
Humidity96%
Visibility—
Dew point51°
Thu, 2959° / 45°0Clear
59 °Clear

Neptune, Thursday, 29 October

Clear. High 59°, low 45°.

Pressure29.88 inHg
Wind14.8 mph W
Humidity64%
Visibility—
Dew point44°
Fri, 3053° / 42°0Overcast
53 °Overcast

Neptune, Friday, 30 October

Overcast. High 53°, low 42°.

Pressure30.21 inHg
Wind10.9 mph NE
Humidity68%
Visibility—
Dew point40°
Sat, 3147° / 45°0.59Rain
47 °Rain

Neptune, Saturday, 31 October

Rain. High 47°, low 45°.

Pressure30.09 inHg
Wind23 mph E
Humidity87%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0152° / 37°0.08Climate normal
52 °Climate normal

Neptune, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.08 in
Chance of precipitation25%
Record high74° (1990)
Record low19° (2002)
Mon, 0252° / 36°0.04Climate normal
52 °Climate normal

Neptune, Monday, 2 November

Climate normal for this date — 60-year average.

Average high52°
Average low36°
Average precipitation0.04 in
Chance of precipitation17%
Record high73° (2022)
Record low10° (1991)
Tue, 0352° / 36°0.06Climate normal
52 °Climate normal

Neptune, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high52°
Average low36°
Average precipitation0.06 in
Chance of precipitation18%
Record high74° (2022)
Record low1° (1991)
Wed, 0451° / 35°0.01Climate normal
51 °Climate normal

Neptune, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high51°
Average low35°
Average precipitation0.01 in
Chance of precipitation13%
Record high71° (1975)
Record low-14° (1991)
Thu, 0551° / 35°0.05Climate normal
51 °Climate normal

Neptune, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high51°
Average low35°
Average precipitation0.05 in
Chance of precipitation20%
Record high72° (2008)
Record low14° (1991)
Fri, 0651° / 35°0.03Climate normal
51 °Climate normal

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°0.02Climate normal
51 °Climate normal

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°0.05Climate normal
51 °Climate normal

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°0.15Climate normal
49 °Climate normal

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°0.08Climate normal
46 °Climate normal

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°0.07Climate normal
45 °Climate normal

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°0.05Climate normal
44 °Climate normal

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°0.04Climate normal
46 °Climate normal

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°0.02Climate normal
46 °Climate normal

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)

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.