As of 00:27 CDT

Weather in Rockton, IL

64°

Rockton, Sunday, 9 August, 00:27

Clear. Feels like 64°. High 84°, low 63°.

Pressure30.03 inHg

Wind2 mph SE

Humidity78%

Visibility6.2 mi

Dew point59°

See detailed hourly forecast

Monthly outlook for Rockton, IL: average high 77.7°, average low 60.1°. That is 1.1° below the climate normal for August. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 11 August (85.2°), the coolest 20 August (51.4°).

77.7°/60.1°

Average high / low

−1.1°

Below normal

4 / 5

Wet days / normal

1.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	79.7°	79.8°	-0°
19 August – 28 August	74.3°	79.8°	-3.1°
29 August – 7 September	at normal	78°	—

August records over 66 years

98.8°23 August 2023All-time high

44.1°29 August 1965All-time low

Climate normals and records are computed from the nearest reference point — Rockford (13 mi).

Mon, 1085° / 70°

0.52

85 °

Rockton, Monday, 10 August

Heavy rain. High 85°, low 70°.

Pressure29.91 inHg

Wind5.4 mph SE

Humidity78%

Visibility6.2 mi

Dew point72°

Tue, 1185° / 68°

0.36

85 °

Rockton, Tuesday, 11 August

Heavy rain. High 85°, low 68°.

Pressure29.77 inHg

Wind2.6 mph SW

Humidity80%

Visibility6.2 mi

Dew point73°

Wed, 1281° / 66°

81 °

Rockton, Wednesday, 12 August

Light rain. High 81°, low 66°.

Pressure29.85 inHg

Wind6.5 mph NW

Humidity73%

Visibility6.2 mi

Dew point70°

Thu, 1371° / 58°

71 °

Rockton, Thursday, 13 August

Overcast. High 71°, low 58°.

Pressure30.03 inHg

Wind9.2 mph E

Humidity69%

Visibility—

Dew point58°

Fri, 1478° / 55°

78 °

Rockton, Friday, 14 August

Mostly clear. High 78°, low 55°.

Pressure30.12 inHg

Wind5.1 mph SE

Humidity55%

Visibility—

Dew point56°

Sat, 1574° / 59°

74 °

Rockton, Saturday, 15 August

Overcast. High 74°, low 59°.

Pressure30.27 inHg

Wind10.7 mph SW

Humidity55%

Visibility—

Dew point55°

Sun, 1675° / 56°

75 °

Rockton, Sunday, 16 August

Overcast. High 75°, low 56°.

Pressure30.15 inHg

Wind5.5 mph SE

Humidity66%

Visibility—

Dew point59°

Mon, 1781° / 62°

0.01

81 °

Rockton, Monday, 17 August

Light rain. High 81°, low 62°.

Pressure30.03 inHg

Wind5.6 mph SW

Humidity62%

Visibility—

Dew point62°

Tue, 1883° / 65°

83 °

Rockton, Tuesday, 18 August

Overcast. High 83°, low 65°.

Pressure29.94 inHg

Wind14.8 mph SW

Humidity62%

Visibility—

Dew point66°

Wed, 1974° / 58°

0.01

74 °

Rockton, Wednesday, 19 August

Light rain. High 74°, low 58°.

Pressure29.94 inHg

Wind16.8 mph N

Humidity68%

Visibility—

Dew point57°

Thu, 2067° / 51°

67 °

Rockton, Thursday, 20 August

Overcast. High 67°, low 51°.

Pressure30.09 inHg

Wind9.4 mph N

Humidity58%

Visibility—

Dew point50°

Fri, 2175° / 52°

75 °

Rockton, Friday, 21 August

Clear. High 75°, low 52°.

Pressure30.06 inHg

Wind7.7 mph SE

Humidity53%

Visibility—

Dew point53°

Sat, 2270° / 54°

0.04

70 °

Rockton, Saturday, 22 August

Light rain. High 70°, low 54°.

Pressure29.88 inHg

Wind11.2 mph SE

Humidity93%

Visibility—

Dew point58°

Sun, 2379° / 63°

0.01

79 °

Rockton, Sunday, 23 August

Light rain. High 79°, low 63°.

Pressure29.91 inHg

Wind15.9 mph W

Humidity47%

Visibility—

Dew point55°

Mon, 2481° / 59°

81 °

Rockton, Monday, 24 August

Overcast. High 81°, low 59°.

Pressure30.00 inHg

Wind6.6 mph S

Humidity50%

Visibility—

Dew point58°

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

Tue, 2580° / 64°

0.07

80 °

Rockton, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high80°

Average low64°

Average precipitation0.07 in

Chance of precipitation20%

Record high92° (1991)

Record low51° (2017)

Wed, 2680° / 64°

0.16

80 °

Rockton, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high80°

Average low64°

Average precipitation0.16 in

Chance of precipitation30%

Record high94° (2003)

Record low50° (1964)

Thu, 2780° / 65°

0.11

80 °

Rockton, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high80°

Average low65°

Average precipitation0.11 in

Chance of precipitation27%

Record high95° (2024)

Record low51° (1968)

Fri, 2880° / 64°

0.15

80 °

Rockton, Friday, 28 August

Climate normal for this date — 60-year average.

Average high80°

Average low64°

Average precipitation0.15 in

Chance of precipitation35%

Record high92° (1984)

Record low46° (1986)

Sat, 2980° / 63°

0.13

80 °

Rockton, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.13 in

Chance of precipitation22%

Record high93° (1984)

Record low44° (1965)

Sun, 3078° / 63°

0.06

78 °

Rockton, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high78°

Average low63°

Average precipitation0.06 in

Chance of precipitation30%

Record high93° (2013)

Record low53° (2009)

Mon, 3178° / 62°

0.07

78 °

Rockton, Monday, 31 August

Climate normal for this date — 60-year average.

Average high78°

Average low62°

Average precipitation0.07 in

Chance of precipitation23%

Record high91° (2012)

Record low46° (2009)

Tue, 0178° / 62°

0.09

78 °

Rockton, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high78°

Average low62°

Average precipitation0.09 in

Chance of precipitation30%

Record high92° (2011)

Record low46° (1967)

Wed, 0279° / 62°

0.05

79 °

Rockton, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high79°

Average low62°

Average precipitation0.05 in

Chance of precipitation25%

Record high92° (2008)

Record low47° (1967)

Thu, 0378° / 62°

0.11

78 °

Rockton, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high78°

Average low62°

Average precipitation0.11 in

Chance of precipitation35%

Record high94° (2023)

Record low47° (1974)

Fri, 0477° / 61°

0.09

77 °

Rockton, Friday, 4 September

Climate normal for this date — 60-year average.

Average high77°

Average low61°

Average precipitation0.09 in

Chance of precipitation32%

Record high93° (2023)

Record low45° (1974)

Sat, 0577° / 60°

0.06

77 °

Rockton, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high77°

Average low60°

Average precipitation0.06 in

Chance of precipitation25%

Record high89° (2023)

Record low48° (1974)

Sun, 0677° / 61°

0.1

77 °

Rockton, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high77°

Average low61°

Average precipitation0.1 in

Chance of precipitation32%

Record high90° (1990)

Record low46° (1988)

Mon, 0777° / 60°

0.12

77 °

Rockton, Monday, 7 September

Climate normal for this date — 60-year average.

Average high77°

Average low60°

Average precipitation0.12 in

Chance of precipitation28%

Record high90° (1960)

Record low45° (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 Rockton, IL 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 Rockton, IL 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.