Monthly outlook for Sparta, WI: average high 61.4°, average low 45°. That is 2.3° above the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 10 October (82.6°), the coolest 18 October (29.1°).
61.4°/45°
Average high / low
+2.3°
Above normal
5 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
64.7°
58.3°
+3.5°
19 October – 28 October
56.1°
54.4°
+0.9°
29 October – 7 November
at normal
49.7°
—
October records over 66 years
87.3°3 October 2025All-time high
21.6°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Norwalk (12 mi).
Sat, 1083° / 53°0
83 °
Sparta, Saturday, 10 October
Clear. High 83°, low 53°.
Pressure29.91 inHg
Wind10.4 mph S
Humidity64%
Visibility6.2 mi
Dew point62°
Sun, 1178° / 57°0
78 °
Sparta, Sunday, 11 October
Clear. High 78°, low 57°.
Pressure29.85 inHg
Wind8.3 mph S
Humidity55%
Visibility6.2 mi
Dew point56°
Mon, 1278° / 64°0.06
78 °
Sparta, Monday, 12 October
Light rain. High 78°, low 64°.
Pressure29.71 inHg
Wind6.2 mph SW
Humidity63%
Visibility6.2 mi
Dew point63°
Tue, 1364° / 57°0.07
64 °
Sparta, Tuesday, 13 October
Light rain. High 64°, low 57°.
Pressure29.94 inHg
Wind4.7 mph N
Humidity79%
Visibility6.2 mi
Dew point53°
Wed, 1460° / 52°0
60 °
Sparta, Wednesday, 14 October
Overcast. High 60°, low 52°.
Pressure30.12 inHg
Wind8.1 mph E
Humidity64%
Visibility—
Dew point46°
Thu, 1561° / 49°0.29
61 °
Sparta, Thursday, 15 October
Rain. High 61°, low 49°.
Pressure29.91 inHg
Wind13.5 mph SE
Humidity59%
Visibility—
Dew point45°
Fri, 1654° / 38°0.59
54 °
Sparta, Friday, 16 October
Rain. High 54°, low 38°.
Pressure29.71 inHg
Wind26.4 mph W
Humidity51%
Visibility—
Dew point29°
Sat, 1744° / 32°0
44 °
Sparta, Saturday, 17 October
Overcast. High 44°, low 32°.
Pressure30.39 inHg
Wind22 mph NW
Humidity39%
Visibility—
Dew point18°
Sun, 1852° / 29°0
52 °
Sparta, Sunday, 18 October
Overcast. High 52°, low 29°.
Pressure30.18 inHg
Wind15.3 mph S
Humidity40%
Visibility—
Dew point23°
Mon, 1959° / 35°0
59 °
Sparta, Monday, 19 October
Clear. High 59°, low 35°.
Pressure30.15 inHg
Wind6.6 mph W
Humidity43%
Visibility—
Dew point31°
Tue, 2064° / 39°0
64 °
Sparta, Tuesday, 20 October
Partly cloudy. High 64°, low 39°.
Pressure30.27 inHg
Wind12.2 mph S
Humidity46%
Visibility—
Dew point38°
Wed, 2156° / 48°0.04
56 °
Sparta, Wednesday, 21 October
Light rain. High 56°, low 48°.
Pressure30.15 inHg
Wind14.7 mph SW
Humidity77%
Visibility—
Dew point48°
Thu, 2267° / 48°0
67 °
Sparta, Thursday, 22 October
Light rain. High 67°, low 48°.
Pressure29.83 inHg
Wind14.4 mph NW
Humidity72%
Visibility—
Dew point52°
Fri, 2346° / 36°0.02
46 °
Sparta, Friday, 23 October
Light rain. High 46°, low 36°.
Pressure29.94 inHg
Wind20.3 mph NW
Humidity62%
Visibility—
Dew point29°
Sat, 2444° / 34°0
44 °
Sparta, Saturday, 24 October
Partly cloudy. High 44°, low 34°.
Pressure30.27 inHg
Wind11.7 mph N
Humidity46%
Visibility—
Dew point22°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2553° / 40°0.05
53 °
Sparta, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.05 in
Chance of precipitation22%
Record high74° (1989)
Record low26° (2020)
Mon, 2653° / 40°0.07
53 °
Sparta, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.07 in
Chance of precipitation18%
Record high74° (1989)
Record low23° (2020)
Tue, 2753° / 40°0.07
53 °
Sparta, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.07 in
Chance of precipitation20%
Record high72° (2014)
Record low22° (2020)
Wed, 2852° / 39°0.08
52 °
Sparta, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.08 in
Chance of precipitation25%
Record high67° (2016)
Record low26° (1969)
Thu, 2953° / 39°0.07
53 °
Sparta, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.07 in
Chance of precipitation27%
Record high78° (2024)
Record low24° (2019)
Fri, 3053° / 40°0.09
53 °
Sparta, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.09 in
Chance of precipitation35%
Record high76° (2024)
Record low22° (1988)
Sat, 3151° / 39°0.1
51 °
Sparta, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.1 in
Chance of precipitation38%
Record high67° (2000)
Record low25° (1996)
Sun, 0150° / 38°0.15
50 °
Sparta, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.15 in
Chance of precipitation27%
Record high72° (2000)
Record low22° (2023)
Mon, 0249° / 37°0.07
49 °
Sparta, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.07 in
Chance of precipitation30%
Record high69° (2022)
Record low15° (1991)
Tue, 0349° / 36°0.06
49 °
Sparta, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.06 in
Chance of precipitation25%
Record high70° (2008)
Record low12° (1991)
Wed, 0448° / 36°0.09
48 °
Sparta, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.09 in
Chance of precipitation27%
Record high71° (2008)
Record low4° (1991)
Thu, 0548° / 36°0.09
48 °
Sparta, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.09 in
Chance of precipitation33%
Record high67° (2016)
Record low15° (1991)
Fri, 0648° / 35°0.06
48 °
Sparta, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.06 in
Chance of precipitation28%
Record high68° (2020)
Record low6° (1991)
Sat, 0747° / 34°0.02
47 °
Sparta, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.02 in
Chance of precipitation15%
Record high67° (2020)
Record low-9° (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 Sparta, 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 Sparta, 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.