As of 00:22 CDT

Weather in Sussex, WI

64°Current weather

Sussex, Sunday, 9 August, 00:22

Clear. Feels like 64°. High 76°, low 62°.

Pressure30.03 inHg
Wind5.4 mph W
Humidity84%
Visibility6.2 mi
Dew point59°

Monthly outlook for Sussex, WI: average high 75°, average low 59°. That is 1.4° below the climate normal for August. Precipitation is expected on 5 days (about 2.6 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 10 August (84.5°), the coolest 20 August (52.3°).

75°/59°
Average high / low
−1.4°
Below normal
5 / 5
Wet days / normal
2.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August77.6°77.7°-0.1°
19 August – 28 August70.6°77.5°-3.8°
29 August – 7 Septemberat normal75.8°

August records over 66 years

99.3°23 August 2023All-time high
49.5°28 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Milwaukee (14 mi).

Mon, 1084° / 67°0.1Light rain
84 °Light rain

Sussex, Monday, 10 August

Light rain. High 84°, low 67°.

Pressure29.94 inHg
Wind4.1 mph SE
Humidity69%
Visibility6.2 mi
Dew point69°
Tue, 1178° / 64°0.73Heavy rain
78 °Heavy rain

Sussex, Tuesday, 11 August

Heavy rain. High 78°, low 64°.

Pressure29.80 inHg
Wind2.7 mph S
Humidity74%
Visibility6.2 mi
Dew point67°
Wed, 1278° / 62°0Overcast
78 °Overcast

Sussex, Wednesday, 12 August

Overcast. High 78°, low 62°.

Pressure29.85 inHg
Wind9.8 mph NW
Humidity66%
Visibility6.2 mi
Dew point65°
Thu, 1372° / 57°0Overcast
72 °Overcast

Sussex, Thursday, 13 August

Overcast. High 72°, low 57°.

Pressure30.03 inHg
Wind7.4 mph SW
Humidity59%
Visibility
Dew point53°
Fri, 1477° / 55°0Mostly clear
77 °Mostly clear

Sussex, Friday, 14 August

Mostly clear. High 77°, low 55°.

Pressure30.12 inHg
Wind6.3 mph SW
Humidity47%
Visibility
Dew point52°
Sat, 1575° / 58°0.02Light rain
75 °Light rain

Sussex, Saturday, 15 August

Light rain. High 75°, low 58°.

Pressure30.27 inHg
Wind7.2 mph SE
Humidity58%
Visibility
Dew point57°
Sun, 1674° / 55°0Overcast
74 °Overcast

Sussex, Sunday, 16 August

Overcast. High 74°, low 55°.

Pressure30.15 inHg
Wind4.7 mph S
Humidity61%
Visibility
Dew point57°
Mon, 1779° / 60°0Partly cloudy
79 °Partly cloudy

Sussex, Monday, 17 August

Partly cloudy. High 79°, low 60°.

Pressure30.03 inHg
Wind6.9 mph W
Humidity61%
Visibility
Dew point61°
Tue, 1883° / 65°0.01Light rain
83 °Light rain

Sussex, Tuesday, 18 August

Light rain. High 83°, low 65°.

Pressure29.94 inHg
Wind15 mph SW
Humidity65%
Visibility
Dew point66°
Wed, 1970° / 60°0Light rain
70 °Light rain

Sussex, Wednesday, 19 August

Light rain. High 70°, low 60°.

Pressure29.91 inHg
Wind19 mph NW
Humidity62%
Visibility
Dew point56°
Thu, 2069° / 52°0Overcast
69 °Overcast

Sussex, Thursday, 20 August

Overcast. High 69°, low 52°.

Pressure30.06 inHg
Wind10.3 mph N
Humidity52%
Visibility
Dew point47°
Fri, 2171° / 53°0Clear
71 °Clear

Sussex, Friday, 21 August

Clear. High 71°, low 53°.

Pressure30.09 inHg
Wind8.5 mph E
Humidity48%
Visibility
Dew point48°
Sat, 2262° / 53°0.46Rain
62 °Rain

Sussex, Saturday, 22 August

Rain. High 62°, low 53°.

Pressure29.91 inHg
Wind11.7 mph SE
Humidity96%
Visibility
Dew point56°
Sun, 2375° / 61°0.04Light rain
75 °Light rain

Sussex, Sunday, 23 August

Light rain. High 75°, low 61°.

Pressure29.88 inHg
Wind16.8 mph W
Humidity58%
Visibility
Dew point56°
Mon, 2476° / 57°0Overcast
76 °Overcast

Sussex, Monday, 24 August

Overcast. High 76°, low 57°.

Pressure30.03 inHg
Wind5.3 mph SE
Humidity59%
Visibility
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 66°0.09Climate normal
78 °Climate normal

Sussex, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high78°
Average low66°
Average precipitation0.09 in
Chance of precipitation27%
Record high92° (2021)
Record low53° (2025)
Wed, 2678° / 66°0.16Climate normal
78 °Climate normal

Sussex, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high78°
Average low66°
Average precipitation0.16 in
Chance of precipitation40%
Record high93° (2020)
Record low52° (2025)
Thu, 2778° / 66°0.11Climate normal
78 °Climate normal

Sussex, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high78°
Average low66°
Average precipitation0.11 in
Chance of precipitation35%
Record high94° (2024)
Record low55° (2025)
Fri, 2878° / 65°0.12Climate normal
78 °Climate normal

Sussex, Friday, 28 August

Climate normal for this date — 60-year average.

Average high78°
Average low65°
Average precipitation0.12 in
Chance of precipitation38%
Record high93° (2021)
Record low49° (1986)
Sat, 2977° / 65°0.1Climate normal
77 °Climate normal

Sussex, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high77°
Average low65°
Average precipitation0.1 in
Chance of precipitation27%
Record high89° (2022)
Record low51° (1965)
Sun, 3076° / 65°0.07Climate normal
76 °Climate normal

Sussex, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high76°
Average low65°
Average precipitation0.07 in
Chance of precipitation33%
Record high89° (2013)
Record low53° (2023)
Mon, 3176° / 64°0.04Climate normal
76 °Climate normal

Sussex, Monday, 31 August

Climate normal for this date — 60-year average.

Average high76°
Average low64°
Average precipitation0.04 in
Chance of precipitation13%
Record high87° (2012)
Record low51° (2009)
Tue, 0176° / 64°0.09Climate normal
76 °Climate normal

Sussex, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high76°
Average low64°
Average precipitation0.09 in
Chance of precipitation27%
Record high89° (2022)
Record low51° (2009)
Wed, 0276° / 64°0.05Climate normal
76 °Climate normal

Sussex, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high76°
Average low64°
Average precipitation0.05 in
Chance of precipitation28%
Record high89° (2011)
Record low50° (2017)
Thu, 0376° / 64°0.09Climate normal
76 °Climate normal

Sussex, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high76°
Average low64°
Average precipitation0.09 in
Chance of precipitation27%
Record high94° (2023)
Record low50° (1974)
Fri, 0475° / 63°0.07Climate normal
75 °Climate normal

Sussex, Friday, 4 September

Climate normal for this date — 60-year average.

Average high75°
Average low63°
Average precipitation0.07 in
Chance of precipitation28%
Record high91° (2023)
Record low47° (2025)
Sat, 0575° / 62°0.08Climate normal
75 °Climate normal

Sussex, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high75°
Average low62°
Average precipitation0.08 in
Chance of precipitation27%
Record high89° (2023)
Record low48° (2019)
Sun, 0675° / 63°0.08Climate normal
75 °Climate normal

Sussex, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high75°
Average low63°
Average precipitation0.08 in
Chance of precipitation35%
Record high89° (1990)
Record low48° (2017)
Mon, 0775° / 62°0.1Climate normal
75 °Climate normal

Sussex, Monday, 7 September

Climate normal for this date — 60-year average.

Average high75°
Average low62°
Average precipitation0.1 in
Chance of precipitation32%
Record high88° (1960)
Record low46° (2025)

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 Sussex, 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 Sussex, 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.