Monthly outlook for Deerfield, WI: average high 60.6°, average low 45.8°. That is 2.4° above the climate normal for October. Precipitation is expected on 4 days (about 1.8 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 21 October (70°), the coolest 26 October (35.5°).
60.6°/45.8°
Average high / low
+2.4°
Above normal
4 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
62.1°
57.6°
+2.5°
24 October – 2 November
58°
53.8°
+2.4°
3 November – 12 November
at normal
48.2°
—
October records over 66 years
84.9°3 October 2025All-time high
21.4°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Fort Atkinson (14 mi).
Thu, 1563° / 56°1.08
63 °
Deerfield, Thursday, 15 October
Heavy rain. High 63°, low 56°.
Pressure30.03 inHg
Wind9.1 mph E
Humidity87%
Visibility3.8 mi
Dew point54°
Fri, 1657° / 42°0.2
57 °
Deerfield, Friday, 16 October
Rain. High 57°, low 42°.
Pressure30.06 inHg
Wind16.6 mph NW
Humidity74%
Visibility6.2 mi
Dew point45°
Sat, 1754° / 36°0
54 °
Deerfield, Saturday, 17 October
Clear. High 54°, low 36°.
Pressure30.53 inHg
Wind6.9 mph SW
Humidity53%
Visibility6.2 mi
Dew point34°
Sun, 1859° / 43°0
59 °
Deerfield, Sunday, 18 October
Clear. High 59°, low 43°.
Pressure30.39 inHg
Wind13.7 mph SW
Humidity54%
Visibility6.2 mi
Dew point38°
Mon, 1962° / 42°0
62 °
Deerfield, Monday, 19 October
Clear. High 62°, low 42°.
Pressure30.39 inHg
Wind6.6 mph SW
Humidity59%
Visibility—
Dew point44°
Tue, 2066° / 44°0
66 °
Deerfield, Tuesday, 20 October
Clear. High 66°, low 44°.
Pressure30.33 inHg
Wind5.9 mph SE
Humidity51%
Visibility—
Dew point43°
Wed, 2170° / 49°0
70 °
Deerfield, Wednesday, 21 October
Clear. High 70°, low 49°.
Pressure30.18 inHg
Wind13.6 mph S
Humidity54%
Visibility—
Dew point49°
Thu, 2263° / 60°0.46
63 °
Deerfield, Thursday, 22 October
Rain. High 63°, low 60°.
Pressure29.91 inHg
Wind16.2 mph SW
Humidity94%
Visibility—
Dew point61°
Fri, 2364° / 57°0
64 °
Deerfield, Friday, 23 October
Overcast. High 64°, low 57°.
Pressure30.09 inHg
Wind11.3 mph SE
Humidity72%
Visibility—
Dew point54°
Sat, 2467° / 50°0.09
67 °
Deerfield, Saturday, 24 October
Light rain. High 67°, low 50°.
Pressure29.80 inHg
Wind22.5 mph SW
Humidity88%
Visibility—
Dew point61°
Sun, 2554° / 39°0
54 °
Deerfield, Sunday, 25 October
Clear. High 54°, low 39°.
Pressure30.30 inHg
Wind12.5 mph W
Humidity41%
Visibility—
Dew point29°
Mon, 2651° / 36°0
51 °
Deerfield, Monday, 26 October
Clear. High 51°, low 36°.
Pressure30.36 inHg
Wind10 mph NW
Humidity36%
Visibility—
Dew point22°
Tue, 2757° / 38°0
57 °
Deerfield, Tuesday, 27 October
Mostly clear. High 57°, low 38°.
Pressure30.15 inHg
Wind21.3 mph SW
Humidity43%
Visibility—
Dew point32°
Wed, 2858° / 43°0
58 °
Deerfield, Wednesday, 28 October
Overcast. High 58°, low 43°.
Pressure30.00 inHg
Wind14.4 mph SW
Humidity40%
Visibility—
Dew point33°
Thu, 2961° / 44°0
61 °
Deerfield, Thursday, 29 October
Mostly clear. High 61°, low 44°.
Pressure29.97 inHg
Wind13.6 mph SW
Humidity62%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3055° / 41°0.09
55 °
Deerfield, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.09 in
Chance of precipitation30%
Record high76° (2024)
Record low21° (1988)
Sat, 3153° / 41°0.09
53 °
Deerfield, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.09 in
Chance of precipitation37%
Record high69° (1974)
Record low25° (2019)
Sun, 0152° / 40°0.19
52 °
Deerfield, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.19 in
Chance of precipitation38%
Record high71° (2016)
Record low20° (2019)
Mon, 0251° / 39°0.12
51 °
Deerfield, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.12 in
Chance of precipitation35%
Record high72° (1961)
Record low21° (1991)
Tue, 0351° / 38°0.05
51 °
Deerfield, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.05 in
Chance of precipitation18%
Record high70° (1964)
Record low16° (1991)
Wed, 0450° / 38°0.08
50 °
Deerfield, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.08 in
Chance of precipitation23%
Record high69° (2008)
Record low13° (1991)
Thu, 0550° / 37°0.1
50 °
Deerfield, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.1 in
Chance of precipitation28%
Record high69° (2015)
Record low18° (1991)
Fri, 0649° / 36°0.08
49 °
Deerfield, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.08 in
Chance of precipitation30%
Record high68° (1975)
Record low18° (1991)
Sat, 0749° / 36°0.03
49 °
Deerfield, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.03 in
Chance of precipitation18%
Record high67° (2020)
Record low9° (1991)
Sun, 0849° / 36°0.04
49 °
Deerfield, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.04 in
Chance of precipitation20%
Record high70° (2020)
Record low12° (1991)
Mon, 0949° / 36°0.1
49 °
Deerfield, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.1 in
Chance of precipitation33%
Record high73° (2020)
Record low18° (1991)
Tue, 1047° / 35°0.09
47 °
Deerfield, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.09 in
Chance of precipitation33%
Record high71° (2022)
Record low14° (2017)
Wed, 1145° / 32°0.07
45 °
Deerfield, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.07 in
Chance of precipitation27%
Record high68° (1964)
Record low13° (2019)
Thu, 1243° / 31°0.06
43 °
Deerfield, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.06 in
Chance of precipitation27%
Record high62° (1964)
Record low4° (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 Deerfield, 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 Deerfield, 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.