As of 08:07 CDT

Weather in Deerfield, WI

50°

Deerfield, Friday, 9 October, 08:07

Overcast. Feels like 48°. High 68°, low 50°.

Pressure30.12 inHg

Wind4.4 mph SE

Humidity88%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Monthly outlook for Deerfield, WI: average high 64.6°, average low 47.3°. That is 3.3° above the climate normal for October. Precipitation is expected on 5 days (about 1.4 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (79.1°), the coolest 18 October (32.8°).

64.6°/47.3°

Average high / low

+3.3°

Above normal

5 / 5

Wet days / normal

1.4 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	65.1°	59.8°	+2.9°
19 October – 28 October	63.9°	55.7°	+4.6°
29 October – 7 November	at normal	51.5°	—

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).

Sat, 1077° / 58°

77 °

Deerfield, Saturday, 10 October

Overcast. High 77°, low 58°.

Pressure30.03 inHg

Wind11.4 mph S

Humidity61%

Visibility6.2 mi

Dew point57°

Sun, 1174° / 54°

74 °

Deerfield, Sunday, 11 October

Clear. High 74°, low 54°.

Pressure29.91 inHg

Wind6.3 mph S

Humidity67%

Visibility6.2 mi

Dew point59°

Mon, 1279° / 62°

0.22

79 °

Deerfield, Monday, 12 October

Rain. High 79°, low 62°.

Pressure29.77 inHg

Wind10.4 mph SW

Humidity63%

Visibility6.2 mi

Dew point62°

Tue, 1365° / 60°

0.33

65 °

Deerfield, Tuesday, 13 October

Rain. High 65°, low 60°.

Pressure29.85 inHg

Wind8.9 mph NE

Humidity85%

Visibility—

Dew point59°

Wed, 1462° / 54°

0.27

62 °

Deerfield, Wednesday, 14 October

Rain. High 62°, low 54°.

Pressure29.94 inHg

Wind12.2 mph NE

Humidity83%

Visibility—

Dew point56°

Thu, 1569° / 54°

0.18

69 °

Deerfield, Thursday, 15 October

Light rain. High 69°, low 54°.

Pressure29.74 inHg

Wind21.3 mph SW

Humidity96%

Visibility—

Dew point55°

Fri, 1657° / 41°

57 °

Deerfield, Friday, 16 October

Overcast. High 57°, low 41°.

Pressure29.85 inHg

Wind26.7 mph W

Humidity51%

Visibility—

Dew point32°

Sat, 1746° / 38°

46 °

Deerfield, Saturday, 17 October

Overcast. High 46°, low 38°.

Pressure30.30 inHg

Wind17.2 mph W

Humidity54%

Visibility—

Dew point30°

Sun, 1853° / 33°

53 °

Deerfield, Sunday, 18 October

Overcast. High 53°, low 33°.

Pressure30.30 inHg

Wind12.1 mph SW

Humidity46%

Visibility—

Dew point29°

Mon, 1959° / 38°

59 °

Deerfield, Monday, 19 October

Overcast. High 59°, low 38°.

Pressure30.33 inHg

Wind7.9 mph SW

Humidity45%

Visibility—

Dew point34°

Tue, 2063° / 41°

63 °

Deerfield, Tuesday, 20 October

Clear. High 63°, low 41°.

Pressure30.39 inHg

Wind9.7 mph S

Humidity43%

Visibility—

Dew point37°

Wed, 2165° / 43°

65 °

Deerfield, Wednesday, 21 October

Clear. High 65°, low 43°.

Pressure30.30 inHg

Wind7.7 mph S

Humidity42%

Visibility—

Dew point38°

Thu, 2266° / 45°

66 °

Deerfield, Thursday, 22 October

Clear. High 66°, low 45°.

Pressure30.27 inHg

Wind4 mph E

Humidity42%

Visibility—

Dew point38°

Fri, 2365° / 44°

65 °

Deerfield, Friday, 23 October

Clear. High 65°, low 44°.

Pressure30.24 inHg

Wind6 mph E

Humidity39%

Visibility—

Dew point36°

Sat, 2465° / 43°

65 °

Deerfield, Saturday, 24 October

Mostly clear. High 65°, low 43°.

Pressure30.12 inHg

Wind7.7 mph E

Humidity53%

Visibility—

Dew point43°

From day 17 onward the outlook is built from 60-year climate statistics

Sun, 2555° / 42°

0.07

55 °

Deerfield, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.07 in

Chance of precipitation27%

Record high75° (1989)

Record low28° (2006)

Mon, 2654° / 41°

0.1

54 °

Deerfield, Monday, 26 October

Climate normal for this date — 60-year average.

Average high54°

Average low41°

Average precipitation0.1 in

Chance of precipitation22%

Record high75° (1963)

Record low25° (1962)

Tue, 2754° / 41°

0.07

54 °

Deerfield, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high54°

Average low41°

Average precipitation0.07 in

Chance of precipitation22%

Record high72° (2014)

Record low26° (1976)

Wed, 2853° / 40°

0.05

53 °

Deerfield, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.05 in

Chance of precipitation23%

Record high68° (1974)

Record low26° (1976)

Thu, 2953° / 40°

0.05

53 °

Deerfield, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.05 in

Chance of precipitation18%

Record high77° (2024)

Record low24° (1980)

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)

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.