As of 13:44 CDT

Weather in Sidney, IL

87°Current weather

Sidney, Saturday, 8 August, 13:44

Overcast. Feels like 98°. High 88°, low 71°.

Pressure30.03 inHg
Wind3 mph S
Humidity70%
Visibility6.2 mi
Dew point76°

Monthly outlook for Sidney, IL: average high 81.6°, average low 64.8°. That is 0.1° below the climate normal for August. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 9 August (94°), the coolest 23 August (50.1°).

81.6°/64.8°
Average high / low
−0.1°
Below normal
4 / 5
Wet days / normal
1.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August82.6°81.6°+0.5°
18 August – 27 August79.8°82°-1.2°
28 August – 6 Septemberat normal80.8°

August records over 66 years

99.1°17 August 1988All-time high
45.1°29 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Champaign (12 mi).

Sun, 0994° / 70°0Mostly clear
94 °Mostly clear

Sidney, Sunday, 9 August

Mostly clear. High 94°, low 70°.

Pressure29.97 inHg
Wind14.5 mph S
Humidity71%
Visibility6.2 mi
Dew point75°
Mon, 1091° / 75°0.01Light rain
91 °Light rain

Sidney, Monday, 10 August

Light rain. High 91°, low 75°.

Pressure29.94 inHg
Wind11.1 mph SW
Humidity65%
Visibility6.2 mi
Dew point75°
Tue, 1189° / 75°0Light rain
89 °Light rain

Sidney, Tuesday, 11 August

Light rain. High 89°, low 75°.

Pressure29.88 inHg
Wind12.7 mph SW
Humidity62%
Visibility6.2 mi
Dew point73°
Wed, 1284° / 70°0.04Light rain
84 °Light rain

Sidney, Wednesday, 12 August

Light rain. High 84°, low 70°.

Pressure29.85 inHg
Wind7 mph N
Humidity77%
Visibility6.2 mi
Dew point75°
Thu, 1373° / 64°0.41Rain
73 °Rain

Sidney, Thursday, 13 August

Rain. High 73°, low 64°.

Pressure29.88 inHg
Wind10.6 mph NE
Humidity97%
Visibility
Dew point71°
Fri, 1473° / 54°0Clear
73 °Clear

Sidney, Friday, 14 August

Clear. High 73°, low 54°.

Pressure30.18 inHg
Wind10.4 mph NE
Humidity58%
Visibility
Dew point54°
Sat, 1575° / 53°0Partly cloudy
75 °Partly cloudy

Sidney, Saturday, 15 August

Partly cloudy. High 75°, low 53°.

Pressure30.30 inHg
Wind7.3 mph E
Humidity56%
Visibility
Dew point54°
Sun, 1678° / 56°0Partly cloudy
78 °Partly cloudy

Sidney, Sunday, 16 August

Partly cloudy. High 78°, low 56°.

Pressure30.21 inHg
Wind10.3 mph S
Humidity55%
Visibility
Dew point57°
Mon, 1781° / 66°0.05Light rain
81 °Light rain

Sidney, Monday, 17 August

Light rain. High 81°, low 66°.

Pressure29.97 inHg
Wind11 mph SW
Humidity83%
Visibility
Dew point72°
Tue, 1882° / 70°0Light rain
82 °Light rain

Sidney, Tuesday, 18 August

Light rain. High 82°, low 70°.

Pressure30.00 inHg
Wind9.9 mph NE
Humidity69%
Visibility
Dew point69°
Wed, 1987° / 67°0Partly cloudy
87 °Partly cloudy

Sidney, Wednesday, 19 August

Partly cloudy. High 87°, low 67°.

Pressure29.94 inHg
Wind7 mph S
Humidity60%
Visibility
Dew point67°
Thu, 2079° / 69°0.46Rain
79 °Rain

Sidney, Thursday, 20 August

Rain. High 79°, low 69°.

Pressure29.88 inHg
Wind8.6 mph N
Humidity83%
Visibility
Dew point72°
Fri, 2180° / 64°0Partly cloudy
80 °Partly cloudy

Sidney, Friday, 21 August

Partly cloudy. High 80°, low 64°.

Pressure29.94 inHg
Wind10 mph NE
Humidity62%
Visibility
Dew point63°
Sat, 2282° / 62°0Clear
82 °Clear

Sidney, Saturday, 22 August

Clear. High 82°, low 62°.

Pressure29.91 inHg
Wind16.1 mph NE
Humidity59%
Visibility
Dew point64°
Sun, 2369° / 50°0Partly cloudy
69 °Partly cloudy

Sidney, Sunday, 23 August

Partly cloudy. High 69°, low 50°.

Pressure30.18 inHg
Wind14.2 mph NE
Humidity50%
Visibility
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 65°0.09Climate normal
82 °Climate normal

Sidney, Monday, 24 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation28%
Record high96° (2023)
Record low53° (1966)
Tue, 2582° / 65°0.07Climate normal
82 °Climate normal

Sidney, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation25%
Record high92° (2020)
Record low55° (1977)
Wed, 2683° / 66°0.09Climate normal
83 °Climate normal

Sidney, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high83°
Average low66°
Average precipitation0.09 in
Chance of precipitation32%
Record high92° (2024)
Record low53° (1964)
Thu, 2783° / 66°0.12Climate normal
83 °Climate normal

Sidney, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high83°
Average low66°
Average precipitation0.12 in
Chance of precipitation32%
Record high94° (2024)
Record low52° (1968)
Fri, 2882° / 66°0.14Climate normal
82 °Climate normal

Sidney, Friday, 28 August

Climate normal for this date — 60-year average.

Average high82°
Average low66°
Average precipitation0.14 in
Chance of precipitation32%
Record high94° (2013)
Record low49° (1986)
Sat, 2982° / 65°0.11Climate normal
82 °Climate normal

Sidney, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation28%
Record high93° (1984)
Record low45° (1986)
Sun, 3081° / 65°0.07Climate normal
81 °Climate normal

Sidney, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (1995)
Record low48° (1986)
Mon, 3181° / 64°0.08Climate normal
81 °Climate normal

Sidney, Monday, 31 August

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation22%
Record high97° (2013)
Record low51° (2009)
Tue, 0181° / 64°0.11Climate normal
81 °Climate normal

Sidney, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation22%
Record high99° (2011)
Record low49° (1967)
Wed, 0281° / 64°0.08Climate normal
81 °Climate normal

Sidney, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation27%
Record high99° (2011)
Record low49° (1965)
Thu, 0381° / 64°0.08Climate normal
81 °Climate normal

Sidney, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation28%
Record high96° (2011)
Record low48° (1974)
Fri, 0480° / 63°0.09Climate normal
80 °Climate normal

Sidney, Friday, 4 September

Climate normal for this date — 60-year average.

Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation22%
Record high93° (1999)
Record low48° (1974)
Sat, 0580° / 62°0.04Climate normal
80 °Climate normal

Sidney, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high80°
Average low62°
Average precipitation0.04 in
Chance of precipitation20%
Record high93° (1999)
Record low48° (1997)
Sun, 0680° / 63°0.07Climate normal
80 °Climate normal

Sidney, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation28%
Record high93° (1990)
Record low47° (1962)

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, 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 Sidney, 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.