Monthly outlook for East Bonne Terre, MO: average high 99.8°, average low 74.3°. That is 8.1° above the climate normal for August. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 18 August (105.7°), the coolest 22 August (66.9°).
99.8°/74.3°
Average high / low
+8.1°
Above normal
3 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
100.2°
85.3°
+8.3°
19 August – 28 August
99.1°
85.4°
+7.6°
29 August – 7 September
at normal
82.8°
—
August records over 66 years
103.8°12 August 2007All-time high
50°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Potosi (13 mi).
Mon, 1098° / 75°0
98 °
East Bonne Terre, Monday, 10 August
Overcast. High 98°, low 75°.
Pressure29.97 inHg
Wind12 mph SW
Humidity43%
Visibility6.2 mi
Dew point67°
Tue, 11101° / 77°0
101 °
East Bonne Terre, Tuesday, 11 August
Clear. High 101°, low 77°.
Pressure29.91 inHg
Wind12.7 mph SW
Humidity34%
Visibility6.2 mi
Dew point64°
Wed, 12100° / 70°0.7
100 °
East Bonne Terre, Wednesday, 12 August
Rain. High 100°, low 70°.
Pressure29.88 inHg
Wind8.9 mph W
Humidity54%
Visibility6.2 mi
Dew point68°
Thu, 1390° / 70°0.05
90 °
East Bonne Terre, Thursday, 13 August
Light rain. High 90°, low 70°.
Pressure29.91 inHg
Wind8.2 mph S
Humidity59%
Visibility6.2 mi
Dew point70°
Fri, 14104° / 78°0
104 °
East Bonne Terre, Friday, 14 August
Overcast. High 104°, low 78°.
Pressure29.91 inHg
Wind11 mph SW
Humidity27%
Visibility—
Dew point58°
Sat, 15103° / 79°0
103 °
East Bonne Terre, Saturday, 15 August
Clear. High 103°, low 79°.
Pressure30.00 inHg
Wind11 mph SW
Humidity25%
Visibility—
Dew point56°
Sun, 16102° / 80°0.04
102 °
East Bonne Terre, Sunday, 16 August
Light rain. High 102°, low 80°.
Pressure29.94 inHg
Wind12 mph SW
Humidity29%
Visibility—
Dew point60°
Mon, 17106° / 74°0
106 °
East Bonne Terre, Monday, 17 August
Partly cloudy. High 106°, low 74°.
Pressure29.91 inHg
Wind8.9 mph SW
Humidity26%
Visibility—
Dew point56°
Tue, 18106° / 83°0
106 °
East Bonne Terre, Tuesday, 18 August
Partly cloudy. High 106°, low 83°.
Pressure29.91 inHg
Wind12.9 mph W
Humidity21%
Visibility—
Dew point53°
Wed, 19103° / 78°0
103 °
East Bonne Terre, Wednesday, 19 August
Partly cloudy. High 103°, low 78°.
Pressure30.00 inHg
Wind4.5 mph NW
Humidity36%
Visibility—
Dew point65°
Thu, 20102° / 76°0.04
102 °
East Bonne Terre, Thursday, 20 August
Light rain. High 102°, low 76°.
Pressure29.85 inHg
Wind13.9 mph SW
Humidity30%
Visibility—
Dew point59°
Fri, 21101° / 72°0
101 °
East Bonne Terre, Friday, 21 August
Mostly clear. High 101°, low 72°.
Pressure29.83 inHg
Wind9.4 mph N
Humidity28%
Visibility—
Dew point57°
Sat, 2291° / 67°0
91 °
East Bonne Terre, Saturday, 22 August
Mostly clear. High 91°, low 67°.
Pressure29.97 inHg
Wind7.2 mph N
Humidity37%
Visibility—
Dew point56°
Sun, 2398° / 67°0
98 °
East Bonne Terre, Sunday, 23 August
Overcast. High 98°, low 67°.
Pressure29.97 inHg
Wind5.7 mph SE
Humidity31%
Visibility—
Dew point55°
Mon, 24100° / 70°0
100 °
East Bonne Terre, Monday, 24 August
Clear. High 100°, low 70°.
Pressure30.00 inHg
Wind6.7 mph S
Humidity32%
Visibility—
Dew point59°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2586° / 68°0.06
86 °
East Bonne Terre, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.06 in
Chance of precipitation22%
Record high100° (2023)
Record low56° (1966)
Wed, 2686° / 68°0.09
86 °
East Bonne Terre, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.09 in
Chance of precipitation35%
Record high99° (1983)
Record low53° (2025)
Thu, 2785° / 68°0.11
85 °
East Bonne Terre, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.11 in
Chance of precipitation25%
Record high97° (1983)
Record low54° (2025)
Fri, 2885° / 67°0.09
85 °
East Bonne Terre, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.09 in
Chance of precipitation28%
Record high98° (2000)
Record low55° (1967)
Sat, 2984° / 67°0.09
84 °
East Bonne Terre, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.09 in
Chance of precipitation32%
Record high97° (1984)
Record low50° (1986)
Sun, 3084° / 67°0.13
84 °
East Bonne Terre, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.13 in
Chance of precipitation28%
Record high97° (1995)
Record low53° (1986)
Mon, 3183° / 67°0.12
83 °
East Bonne Terre, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.12 in
Chance of precipitation35%
Record high98° (2013)
Record low54° (2009)
Tue, 0183° / 67°0.1
83 °
East Bonne Terre, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.1 in
Chance of precipitation33%
Record high97° (2013)
Record low51° (1967)
Wed, 0282° / 66°0.1
82 °
East Bonne Terre, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.1 in
Chance of precipitation35%
Record high95° (2011)
Record low51° (1974)
Thu, 0382° / 65°0.09
82 °
East Bonne Terre, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation32%
Record high94° (2011)
Record low49° (1974)
Fri, 0482° / 65°0.11
82 °
East Bonne Terre, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation28%
Record high96° (1999)
Record low48° (1974)
Sat, 0582° / 65°0.05
82 °
East Bonne Terre, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.05 in
Chance of precipitation25%
Record high96° (1990)
Record low50° (1974)
Sun, 0682° / 64°0.04
82 °
East Bonne Terre, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.04 in
Chance of precipitation23%
Record high98° (1990)
Record low51° (1988)
Mon, 0782° / 64°0.07
82 °
East Bonne Terre, Monday, 7 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.07 in
Chance of precipitation27%
Record high97° (1990)
Record low50° (2017)
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 East Bonne Terre, MO 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 East Bonne Terre, MO 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.