Monthly outlook for Fortescue, MO: average high 99.8°, average low 72.7°. That is 8.2° above the climate normal for August. Precipitation is expected on 10 days (about 1.3 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 20 August (118.5°), the coolest 15 August (65.4°).
99.8°/72.7°
Average high / low
+8.2°
Above normal
10 / 4
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
92.9°
84.9°
+4.5°
19 August – 28 August
111.1°
85.1°
+14.5°
29 August – 7 September
at normal
83.1°
—
August records over 66 years
102.6°17 August 1983All-time high
50.2°28 August 1986All-time low
Mon, 1096° / 74°0.02
96 °
Fortescue, Monday, 10 August
Light rain. High 96°, low 74°.
Pressure29.83 inHg
Wind4.9 mph SW
Humidity34%
Visibility6.2 mi
Dew point60°
Tue, 11112° / 71°0.25
112 °
Fortescue, Tuesday, 11 August
Heavy rain. High 112°, low 71°.
Pressure29.74 inHg
Wind16.3 mph SW
Humidity27%
Visibility6.2 mi
Dew point60°
Wed, 1293° / 69°0.05
93 °
Fortescue, Wednesday, 12 August
Light rain. High 93°, low 69°.
Pressure29.80 inHg
Wind5.8 mph NE
Humidity46%
Visibility6.2 mi
Dew point66°
Thu, 1384° / 68°0.21
84 °
Fortescue, Thursday, 13 August
Rain. High 84°, low 68°.
Pressure29.85 inHg
Wind22.6 mph E
Humidity69%
Visibility—
Dew point69°
Fri, 1478° / 66°0.11
78 °
Fortescue, Friday, 14 August
Light rain. High 78°, low 66°.
Pressure30.00 inHg
Wind19.2 mph E
Humidity79%
Visibility—
Dew point66°
Sat, 1579° / 65°0.09
79 °
Fortescue, Saturday, 15 August
Light rain. High 79°, low 65°.
Pressure30.09 inHg
Wind10.1 mph E
Humidity85%
Visibility—
Dew point67°
Sun, 1692° / 67°0.14
92 °
Fortescue, Sunday, 16 August
Light rain. High 92°, low 67°.
Pressure30.09 inHg
Wind9.4 mph NE
Humidity53%
Visibility—
Dew point65°
Mon, 1787° / 68°0.06
87 °
Fortescue, Monday, 17 August
Light rain. High 87°, low 68°.
Pressure30.06 inHg
Wind9.3 mph SE
Humidity87%
Visibility—
Dew point69°
Tue, 18109° / 70°0
109 °
Fortescue, Tuesday, 18 August
Overcast. High 109°, low 70°.
Pressure29.80 inHg
Wind10.3 mph SE
Humidity27%
Visibility—
Dew point56°
Wed, 19117° / 81°0
117 °
Fortescue, Wednesday, 19 August
Clear. High 117°, low 81°.
Pressure29.74 inHg
Wind16.9 mph SW
Humidity13%
Visibility—
Dew point47°
Thu, 20119° / 85°0
119 °
Fortescue, Thursday, 20 August
Partly cloudy. High 119°, low 85°.
Pressure29.74 inHg
Wind18.2 mph N
Humidity12%
Visibility—
Dew point45°
Fri, 21106° / 77°0
106 °
Fortescue, Friday, 21 August
Overcast. High 106°, low 77°.
Pressure29.85 inHg
Wind14.3 mph NE
Humidity34%
Visibility—
Dew point62°
Sat, 22116° / 80°0
116 °
Fortescue, Saturday, 22 August
Clear. High 116°, low 80°.
Pressure29.71 inHg
Wind23.4 mph SW
Humidity15%
Visibility—
Dew point51°
Sun, 23109° / 73°0.23
109 °
Fortescue, Sunday, 23 August
Rain. High 109°, low 73°.
Pressure29.80 inHg
Wind22.1 mph S
Humidity26%
Visibility—
Dew point56°
Mon, 24100° / 71°0.07
100 °
Fortescue, Monday, 24 August
Light rain. High 100°, low 71°.
Pressure29.88 inHg
Wind12.9 mph S
Humidity35%
Visibility—
Dew point61°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2586° / 67°0.16
86 °
Fortescue, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low67°
Average precipitation0.16 in
Chance of precipitation27%
Record high101° (2003)
Record low55° (2025)
Wed, 2686° / 68°0.17
86 °
Fortescue, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.17 in
Chance of precipitation38%
Record high99° (2003)
Record low55° (2025)
Thu, 2785° / 68°0.08
85 °
Fortescue, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.08 in
Chance of precipitation28%
Record high98° (1984)
Record low53° (1967)
Fri, 2885° / 67°0.15
85 °
Fortescue, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.15 in
Chance of precipitation27%
Record high101° (1984)
Record low50° (1986)
Sat, 2985° / 67°0.09
85 °
Fortescue, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.09 in
Chance of precipitation28%
Record high102° (1984)
Record low53° (1988)
Sun, 3084° / 67°0.13
84 °
Fortescue, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.13 in
Chance of precipitation35%
Record high99° (2013)
Record low52° (2009)
Mon, 3184° / 66°0.15
84 °
Fortescue, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.15 in
Chance of precipitation33%
Record high97° (2000)
Record low52° (2009)
Tue, 0183° / 66°0.12
83 °
Fortescue, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.12 in
Chance of precipitation27%
Record high100° (2011)
Record low52° (1967)
Wed, 0283° / 66°0.09
83 °
Fortescue, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.09 in
Chance of precipitation30%
Record high96° (2000)
Record low53° (1974)
Thu, 0383° / 66°0.09
83 °
Fortescue, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.09 in
Chance of precipitation22%
Record high93° (1990)
Record low44° (1974)
Fri, 0482° / 65°0.11
82 °
Fortescue, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation23%
Record high96° (2012)
Record low45° (1974)
Sat, 0583° / 65°0.1
83 °
Fortescue, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.1 in
Chance of precipitation18%
Record high95° (1990)
Record low46° (1962)
Sun, 0683° / 65°0.08
83 °
Fortescue, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.08 in
Chance of precipitation17%
Record high98° (1990)
Record low50° (2025)
Mon, 0782° / 64°0.16
82 °
Fortescue, Monday, 7 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.16 in
Chance of precipitation33%
Record high98° (2013)
Record low51° (2014)
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 Fortescue, 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 Fortescue, 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.