Monthly outlook for Sidney, WI: average high 62.9°, average low 43.7°. That is 4.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 12 October (81.1°), the coolest 18 October (26.4°).
62.9°/43.7°
Average high / low
+4.1°
Above normal
3 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
63.1°
56.7°
+3.6°
19 October – 28 October
62.7°
52.6°
+5.6°
29 October – 7 November
at normal
47.7°
—
October records over 66 years
84.9°1 October 2023All-time high
19.2°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Granton (9 mi).
Sat, 1081° / 51°0
81 °
Sidney, Saturday, 10 October
Clear. High 81°, low 51°.
Pressure29.88 inHg
Wind13.2 mph S
Humidity57%
Visibility6.2 mi
Dew point59°
Sun, 1180° / 54°0
80 °
Sidney, Sunday, 11 October
Clear. High 80°, low 54°.
Pressure29.85 inHg
Wind8 mph S
Humidity49%
Visibility6.2 mi
Dew point54°
Mon, 1281° / 63°0.08
81 °
Sidney, Monday, 12 October
Light rain. High 81°, low 63°.
Pressure29.71 inHg
Wind3.6 mph SW
Humidity60%
Visibility6.2 mi
Dew point62°
Tue, 1364° / 57°0.29
64 °
Sidney, Tuesday, 13 October
Rain. High 64°, low 57°.
Pressure29.88 inHg
Wind5.1 mph N
Humidity73%
Visibility6.2 mi
Dew point53°
Wed, 1458° / 48°0
58 °
Sidney, Wednesday, 14 October
Overcast. High 58°, low 48°.
Pressure30.18 inHg
Wind6.9 mph N
Humidity62%
Visibility—
Dew point44°
Thu, 1556° / 46°0.39
56 °
Sidney, Thursday, 15 October
Light rain. High 56°, low 46°.
Pressure29.88 inHg
Wind15.4 mph SE
Humidity96%
Visibility—
Dew point49°
Fri, 1654° / 37°0.03
54 °
Sidney, Friday, 16 October
Snow. High 54°, low 37°.
Pressure29.77 inHg
Wind21.7 mph W
Humidity50%
Visibility—
Dew point28°
Sat, 1740° / 29°0.01
40 °
Sidney, Saturday, 17 October
Light snow. High 40°, low 29°.
Pressure30.39 inHg
Wind22.2 mph NW
Humidity48%
Visibility—
Dew point21°
Sun, 1848° / 26°0
48 °
Sidney, Sunday, 18 October
Clear. High 48°, low 26°.
Pressure30.45 inHg
Wind9.8 mph SW
Humidity33%
Visibility—
Dew point16°
Mon, 1957° / 35°0
57 °
Sidney, Monday, 19 October
Overcast. High 57°, low 35°.
Pressure30.30 inHg
Wind8.7 mph SW
Humidity43%
Visibility—
Dew point30°
Tue, 2061° / 38°0
61 °
Sidney, Tuesday, 20 October
Overcast. High 61°, low 38°.
Pressure30.36 inHg
Wind7.9 mph S
Humidity46%
Visibility—
Dew point35°
Wed, 2168° / 43°0
68 °
Sidney, Wednesday, 21 October
Clear. High 68°, low 43°.
Pressure30.09 inHg
Wind16.2 mph SW
Humidity40%
Visibility—
Dew point37°
Thu, 2259° / 40°0
59 °
Sidney, Thursday, 22 October
Clear. High 59°, low 40°.
Pressure30.15 inHg
Wind8.5 mph NW
Humidity35%
Visibility—
Dew point28°
Fri, 2364° / 38°0
64 °
Sidney, Friday, 23 October
Clear. High 64°, low 38°.
Pressure30.00 inHg
Wind9.2 mph S
Humidity31%
Visibility—
Dew point27°
Sat, 2467° / 52°0.02
67 °
Sidney, Saturday, 24 October
Light rain. High 67°, low 52°.
Pressure29.85 inHg
Wind12.3 mph W
Humidity48%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2552° / 39°0.06
52 °
Sidney, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.06 in
Chance of precipitation25%
Record high73° (1989)
Record low25° (2019)
Mon, 2652° / 39°0.07
52 °
Sidney, Monday, 26 October
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.07 in
Chance of precipitation18%
Record high74° (1989)
Record low20° (1962)
Tue, 2752° / 38°0.07
52 °
Sidney, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.07 in
Chance of precipitation22%
Record high67° (1989)
Record low21° (2020)
Wed, 2850° / 37°0.08
50 °
Sidney, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.08 in
Chance of precipitation23%
Record high65° (2024)
Record low25° (1969)
Thu, 2951° / 37°0.08
51 °
Sidney, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.08 in
Chance of precipitation28%
Record high77° (2024)
Record low23° (1988)
Fri, 3051° / 37°0.08
51 °
Sidney, Friday, 30 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.08 in
Chance of precipitation32%
Record high73° (2024)
Record low19° (1988)
Sat, 3149° / 37°0.09
49 °
Sidney, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.09 in
Chance of precipitation37%
Record high67° (2000)
Record low22° (1996)
Sun, 0148° / 36°0.14
48 °
Sidney, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.14 in
Chance of precipitation33%
Record high70° (2000)
Record low20° (2023)
Mon, 0248° / 35°0.06
48 °
Sidney, Monday, 2 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.06 in
Chance of precipitation22%
Record high70° (2022)
Record low14° (1991)
Tue, 0347° / 34°0.07
47 °
Sidney, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation20%
Record high69° (2008)
Record low12° (1991)
Wed, 0447° / 34°0.06
47 °
Sidney, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (2008)
Record low5° (1991)
Thu, 0546° / 34°0.09
46 °
Sidney, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.09 in
Chance of precipitation33%
Record high66° (2016)
Record low11° (1991)
Fri, 0646° / 33°0.06
46 °
Sidney, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high68° (2020)
Record low4° (1991)
Sat, 0745° / 33°0.03
45 °
Sidney, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.03 in
Chance of precipitation18%
Record high68° (2020)
Record low-10° (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 Sidney, 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 Sidney, 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.