As of 10:31 CDT

Weather in Neptune, IA

48°Current weather

Neptune, Tuesday, 13 October, 10:31

Overcast. Feels like 45°. High 58°, low 48°.

Pressure29.97 inHg
Wind6.9 mph N
Humidity76%
Visibility6.2 mi
Dew point41°

Monthly outlook for Neptune, IA: average high 59°, average low 45.3°. That is 0° above the climate normal for October. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 3 days and 1.1 inches. The warmest day looks like 22 October (72.2°), the coolest 17 October (37.3°).

59°/45.3°
Average high / low
+0°
Above normal
5 / 3
Wet days / normal
1.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
13 October – 22 October61.5°60.4°+0.6°
23 October – 1 November55°55.7°-0.4°
2 November – 11 Novemberat normal49.9°—

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).

Wed, 1461° / 43°0Clear
61 °Clear

Neptune, Wednesday, 14 October

Clear. High 61°, low 43°.

Pressure30.21 inHg
Wind7.2 mph NE
Humidity61%
Visibility6.2 mi
Dew point43°
Thu, 1555° / 48°0.89Heavy rain
55 °Heavy rain

Neptune, Thursday, 15 October

Heavy rain. High 55°, low 48°.

Pressure30.09 inHg
Wind12.9 mph N
Humidity91%
Visibility2.6 mi
Dew point49°
Fri, 1654° / 42°0Clear
54 °Clear

Neptune, Friday, 16 October

Clear. High 54°, low 42°.

Pressure30.59 inHg
Wind15.7 mph N
Humidity51%
Visibility6.2 mi
Dew point32°
Sat, 1761° / 37°0Clear
61 °Clear

Neptune, Saturday, 17 October

Clear. High 61°, low 37°.

Pressure30.33 inHg
Wind17 mph S
Humidity45%
Visibility—
Dew point33°
Sun, 1859° / 46°0Overcast
59 °Overcast

Neptune, Sunday, 18 October

Overcast. High 59°, low 46°.

Pressure30.03 inHg
Wind14.2 mph S
Humidity53%
Visibility—
Dew point40°
Mon, 1963° / 45°0Partly cloudy
63 °Partly cloudy

Neptune, Monday, 19 October

Partly cloudy. High 63°, low 45°.

Pressure30.21 inHg
Wind8.4 mph E
Humidity26%
Visibility—
Dew point24°
Tue, 2063° / 45°0Overcast
63 °Overcast

Neptune, Tuesday, 20 October

Overcast. High 63°, low 45°.

Pressure30.09 inHg
Wind15.1 mph SE
Humidity91%
Visibility—
Dew point52°
Wed, 2168° / 57°0.07Light rain
68 °Light rain

Neptune, Wednesday, 21 October

Light rain. High 68°, low 57°.

Pressure29.91 inHg
Wind19.5 mph S
Humidity79%
Visibility—
Dew point61°
Thu, 2272° / 65°0.44Rain
72 °Rain

Neptune, Thursday, 22 October

Rain. High 72°, low 65°.

Pressure29.74 inHg
Wind15.5 mph S
Humidity78%
Visibility—
Dew point64°
Fri, 2364° / 45°0.47Rain
64 °Rain

Neptune, Friday, 23 October

Rain. High 64°, low 45°.

Pressure29.91 inHg
Wind21 mph W
Humidity64%
Visibility—
Dew point39°
Sat, 2456° / 42°0Clear
56 °Clear

Neptune, Saturday, 24 October

Clear. High 56°, low 42°.

Pressure30.39 inHg
Wind12.8 mph W
Humidity49%
Visibility—
Dew point34°
Sun, 2562° / 42°0Clear
62 °Clear

Neptune, Sunday, 25 October

Clear. High 62°, low 42°.

Pressure30.18 inHg
Wind15.9 mph W
Humidity36%
Visibility—
Dew point31°
Mon, 2649° / 38°0Clear
49 °Clear

Neptune, Monday, 26 October

Clear. High 49°, low 38°.

Pressure30.39 inHg
Wind12 mph N
Humidity50%
Visibility—
Dew point28°
Tue, 2746° / 39°0.07Light rain
46 °Light rain

Neptune, Tuesday, 27 October

Light rain. High 46°, low 39°.

Pressure30.09 inHg
Wind17.6 mph S
Humidity71%
Visibility—
Dew point37°
Wed, 2852° / 42°0Overcast
52 °Overcast

Neptune, Wednesday, 28 October

Overcast. High 52°, low 42°.

Pressure29.88 inHg
Wind17.3 mph NW
Humidity70%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2956° / 38°0.07Climate normal
56 °Climate normal

Neptune, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high56°
Average low38°
Average precipitation0.07 in
Chance of precipitation22%
Record high79° (2024)
Record low24° (1980)
Fri, 3055° / 39°0.09Climate normal
55 °Climate normal

Neptune, Friday, 30 October

Climate normal for this date — 60-year average.

Average high55°
Average low39°
Average precipitation0.09 in
Chance of precipitation30%
Record high74° (2024)
Record low19° (1991)
Sat, 3153° / 37°0.09Climate normal
53 °Climate normal

Neptune, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.09 in
Chance of precipitation27%
Record high74° (1968)
Record low18° (1993)
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)

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.