Monthly outlook for Nauvoo, IL: average high 83.8°, average low 65.8°. That is 0.1° below the climate normal for August. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 11 August (96.2°), the coolest 21 August (52.7°).
83.8°/65.8°
Average high / low
−0.1°
Below normal
4 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
85°
84.1°
+0.5°
19 August – 28 August
81.8°
84°
-1.2°
29 August – 7 September
at normal
81.9°
—
August records over 66 years
101.7°2 August 2011All-time high
49.8°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Wayland (14 mi).
Mon, 1096° / 74°0
96 °
Nauvoo, Monday, 10 August
Overcast. High 96°, low 74°.
Pressure29.88 inHg
Wind8.6 mph W
Humidity58%
Visibility6.2 mi
Dew point71°
Tue, 1196° / 78°0
96 °
Nauvoo, Tuesday, 11 August
Overcast. High 96°, low 78°.
Pressure29.80 inHg
Wind7.1 mph SW
Humidity65%
Visibility6.2 mi
Dew point71°
Wed, 1286° / 70°0.1
86 °
Nauvoo, Wednesday, 12 August
Light rain. High 86°, low 70°.
Pressure29.88 inHg
Wind5.2 mph NW
Humidity73%
Visibility6.2 mi
Dew point72°
Thu, 1380° / 67°0.78
80 °
Nauvoo, Thursday, 13 August
Heavy rain. High 80°, low 67°.
Pressure29.91 inHg
Wind15.4 mph NE
Humidity71%
Visibility—
Dew point68°
Fri, 1480° / 63°0
80 °
Nauvoo, Friday, 14 August
Overcast. High 80°, low 63°.
Pressure30.09 inHg
Wind12.5 mph E
Humidity65%
Visibility—
Dew point64°
Sat, 1571° / 64°0.13
71 °
Nauvoo, Saturday, 15 August
Light rain. High 71°, low 64°.
Pressure30.18 inHg
Wind18 mph E
Humidity77%
Visibility—
Dew point62°
Sun, 1678° / 64°0.01
78 °
Nauvoo, Sunday, 16 August
Light rain. High 78°, low 64°.
Pressure30.12 inHg
Wind9.5 mph E
Humidity80%
Visibility—
Dew point64°
Mon, 1784° / 68°0.02
84 °
Nauvoo, Monday, 17 August
Light rain. High 84°, low 68°.
Pressure30.06 inHg
Wind5.8 mph SE
Humidity66%
Visibility—
Dew point67°
Tue, 1888° / 67°0
88 °
Nauvoo, Tuesday, 18 August
Overcast. High 88°, low 67°.
Pressure30.00 inHg
Wind8.9 mph S
Humidity61%
Visibility—
Dew point67°
Wed, 1977° / 64°0
77 °
Nauvoo, Wednesday, 19 August
Overcast. High 77°, low 64°.
Pressure29.97 inHg
Wind14.3 mph N
Humidity56%
Visibility—
Dew point58°
Thu, 2074° / 55°0
74 °
Nauvoo, Thursday, 20 August
Overcast. High 74°, low 55°.
Pressure30.06 inHg
Wind14.6 mph NE
Humidity50%
Visibility—
Dew point52°
Fri, 2173° / 53°0
73 °
Nauvoo, Friday, 21 August
Overcast. High 73°, low 53°.
Pressure30.06 inHg
Wind9.7 mph SE
Humidity51%
Visibility—
Dew point51°
Sat, 2286° / 61°0.07
86 °
Nauvoo, Saturday, 22 August
Light rain. High 86°, low 61°.
Pressure29.83 inHg
Wind12.6 mph S
Humidity63%
Visibility—
Dew point64°
Sun, 2392° / 67°0
92 °
Nauvoo, Sunday, 23 August
Mostly clear. High 92°, low 67°.
Pressure29.94 inHg
Wind8.9 mph S
Humidity44%
Visibility—
Dew point61°
Mon, 2488° / 68°0
88 °
Nauvoo, Monday, 24 August
Overcast. High 88°, low 68°.
Pressure29.94 inHg
Wind11.2 mph S
Humidity55%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2584° / 67°0.12
84 °
Nauvoo, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.12 in
Chance of precipitation32%
Record high98° (2003)
Record low54° (1966)
Wed, 2685° / 68°0.17
85 °
Nauvoo, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.17 in
Chance of precipitation35%
Record high100° (2003)
Record low53° (2025)
Thu, 2784° / 68°0.07
84 °
Nauvoo, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.07 in
Chance of precipitation22%
Record high97° (2013)
Record low56° (2025)
Fri, 2884° / 67°0.08
84 °
Nauvoo, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.08 in
Chance of precipitation28%
Record high97° (2013)
Record low50° (1986)
Sat, 2984° / 67°0.13
84 °
Nauvoo, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.13 in
Chance of precipitation27%
Record high95° (1983)
Record low50° (1986)
Sun, 3083° / 67°0.08
83 °
Nauvoo, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.08 in
Chance of precipitation28%
Record high100° (2013)
Record low53° (2009)
Mon, 3182° / 66°0.14
82 °
Nauvoo, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.14 in
Chance of precipitation27%
Record high95° (2000)
Record low53° (1967)
Tue, 0182° / 66°0.15
82 °
Nauvoo, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.15 in
Chance of precipitation25%
Record high98° (2011)
Record low50° (1967)
Wed, 0282° / 66°0.08
82 °
Nauvoo, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.08 in
Chance of precipitation30%
Record high95° (1960)
Record low51° (1974)
Thu, 0382° / 65°0.08
82 °
Nauvoo, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.08 in
Chance of precipitation23%
Record high96° (1960)
Record low48° (1974)
Fri, 0481° / 64°0.08
81 °
Nauvoo, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation20%
Record high96° (1960)
Record low44° (1974)
Sat, 0582° / 64°0.04
82 °
Nauvoo, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.04 in
Chance of precipitation20%
Record high96° (1960)
Record low49° (1974)
Sun, 0680° / 64°0.12
80 °
Nauvoo, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.12 in
Chance of precipitation23%
Record high96° (1960)
Record low50° (2025)
Mon, 0781° / 64°0.14
81 °
Nauvoo, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.14 in
Chance of precipitation30%
Record high96° (1960)
Record low47° (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 Nauvoo, 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 Nauvoo, 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.