Monthly outlook for Neptune, WI: average high 61.4°, average low 44.9°. That is 3.1° above the climate normal for October. Precipitation is expected on 1 day (about 0.7 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 23 October (73.3°), the coolest 17 October (33.2°).
61.4°/44.9°
Average high / low
+3.1°
Above normal
1 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
63.2°
57°
+3.4°
24 October – 2 November
58.4°
52.9°
+3°
3 November – 12 November
at normal
47.1°
—
October records over 66 years
86.4°3 October 2025All-time high
21°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Ironton (13 mi).
Thu, 1560° / 51°0.63
60 °
Neptune, Thursday, 15 October
Rain. High 60°, low 51°.
Pressure30.03 inHg
Wind7 mph SE
Humidity98%
Visibility1.7 mi
Dew point55°
Fri, 1652° / 39°0.02
52 °
Neptune, Friday, 16 October
Light rain. High 52°, low 39°.
Pressure30.18 inHg
Wind21.4 mph N
Humidity64%
Visibility6.2 mi
Dew point39°
Sat, 1756° / 33°0
56 °
Neptune, Saturday, 17 October
Clear. High 56°, low 33°.
Pressure30.50 inHg
Wind9.5 mph SW
Humidity46%
Visibility6.2 mi
Dew point32°
Sun, 1861° / 42°0
61 °
Neptune, Sunday, 18 October
Clear. High 61°, low 42°.
Pressure30.33 inHg
Wind13.6 mph SW
Humidity51%
Visibility6.2 mi
Dew point37°
Mon, 1962° / 41°0
62 °
Neptune, Monday, 19 October
Overcast. High 62°, low 41°.
Pressure30.33 inHg
Wind6.7 mph SW
Humidity59%
Visibility—
Dew point44°
Tue, 2066° / 41°0
66 °
Neptune, Tuesday, 20 October
Clear. High 66°, low 41°.
Pressure30.33 inHg
Wind6.3 mph S
Humidity48%
Visibility—
Dew point41°
Wed, 2169° / 48°0
69 °
Neptune, Wednesday, 21 October
Overcast. High 69°, low 48°.
Pressure30.24 inHg
Wind12.9 mph S
Humidity54%
Visibility—
Dew point49°
Thu, 2272° / 60°0
72 °
Neptune, Thursday, 22 October
Light rain. High 72°, low 60°.
Pressure30.12 inHg
Wind14.3 mph S
Humidity56%
Visibility—
Dew point52°
Fri, 2373° / 61°0
73 °
Neptune, Friday, 23 October
Overcast. High 73°, low 61°.
Pressure29.85 inHg
Wind20.8 mph S
Humidity64%
Visibility—
Dew point57°
Sat, 2467° / 48°0
67 °
Neptune, Saturday, 24 October
Clear. High 67°, low 48°.
Pressure30.18 inHg
Wind7.8 mph NW
Humidity40%
Visibility—
Dew point39°
Sun, 2556° / 45°0
56 °
Neptune, Sunday, 25 October
Overcast. High 56°, low 45°.
Pressure30.27 inHg
Wind10.5 mph N
Humidity37%
Visibility—
Dew point28°
Mon, 2655° / 39°0
55 °
Neptune, Monday, 26 October
Mostly clear. High 55°, low 39°.
Pressure29.97 inHg
Wind13.3 mph NW
Humidity40%
Visibility—
Dew point29°
Tue, 2756° / 37°0
56 °
Neptune, Tuesday, 27 October
Light rain. High 56°, low 37°.
Pressure30.12 inHg
Wind8.2 mph SW
Humidity51%
Visibility—
Dew point36°
Wed, 2859° / 40°0
59 °
Neptune, Wednesday, 28 October
Clear. High 59°, low 40°.
Pressure29.85 inHg
Wind12.9 mph SW
Humidity44%
Visibility—
Dew point35°
Thu, 2958° / 39°0
58 °
Neptune, Thursday, 29 October
Clear. High 58°, low 39°.
Pressure29.97 inHg
Wind14.6 mph W
Humidity40%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3054° / 40°0.08
54 °
Neptune, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.08 in
Chance of precipitation32%
Record high75° (2024)
Record low21° (1988)
Sat, 3152° / 40°0.11
52 °
Neptune, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.11 in
Chance of precipitation38%
Record high67° (2000)
Record low25° (2019)
Sun, 0151° / 38°0.19
51 °
Neptune, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.19 in
Chance of precipitation27%
Record high71° (2000)
Record low22° (2023)
Mon, 0250° / 38°0.08
50 °
Neptune, Monday, 2 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.08 in
Chance of precipitation32%
Record high69° (1990)
Record low17° (1991)
Tue, 0350° / 37°0.06
50 °
Neptune, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.06 in
Chance of precipitation25%
Record high71° (1964)
Record low13° (1991)
Wed, 0449° / 37°0.09
49 °
Neptune, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.09 in
Chance of precipitation33%
Record high71° (2008)
Record low10° (1991)
Thu, 0549° / 36°0.09
49 °
Neptune, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.09 in
Chance of precipitation32%
Record high68° (2020)
Record low17° (1991)
Fri, 0649° / 35°0.07
49 °
Neptune, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation27%
Record high68° (2020)
Record low10° (1991)
Sat, 0748° / 35°0.02
48 °
Neptune, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.02 in
Chance of precipitation15%
Record high67° (2020)
Record low-6° (1991)
Sun, 0848° / 34°0.04
48 °
Neptune, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.04 in
Chance of precipitation23%
Record high70° (2020)
Record low1° (1991)
Mon, 0947° / 35°0.09
47 °
Neptune, Monday, 9 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.09 in
Chance of precipitation33%
Record high70° (1999)
Record low17° (1991)
Tue, 1046° / 33°0.12
46 °
Neptune, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.12 in
Chance of precipitation37%
Record high69° (2022)
Record low11° (2017)
Wed, 1144° / 31°0.07
44 °
Neptune, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.07 in
Chance of precipitation32%
Record high68° (1964)
Record low11° (2019)
Thu, 1242° / 30°0.06
42 °
Neptune, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.06 in
Chance of precipitation28%
Record high62° (1964)
Record low1° (2019)
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, WI 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, WI 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.