Monthly outlook for Fairmont, MO: average high 94.1°, average low 71.1°. That is 5.9° above the climate normal for August. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 22 August (115.7°), the coolest 14 August (61.7°).
94.1°/71.1°
Average high / low
+5.9°
Above normal
6 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
87.5°
83.6°
+2.1°
19 August – 28 August
105.3°
83.6°
+12.1°
29 August – 7 September
at normal
81.4°
—
August records over 66 years
101.8°2 August 2011All-time high
47.7°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Wyaconda (5 mi).
Mon, 1095° / 74°0
95 °
Fairmont, Monday, 10 August
Overcast. High 95°, low 74°.
Pressure29.88 inHg
Wind8.1 mph W
Humidity45%
Visibility6.2 mi
Dew point66°
Tue, 1198° / 74°0
98 °
Fairmont, Tuesday, 11 August
Partly cloudy. High 98°, low 74°.
Pressure29.80 inHg
Wind14.6 mph SW
Humidity40%
Visibility6.2 mi
Dew point66°
Wed, 1290° / 72°0.27
90 °
Fairmont, Wednesday, 12 August
Rain. High 90°, low 72°.
Pressure29.83 inHg
Wind7 mph E
Humidity59%
Visibility6.2 mi
Dew point72°
Thu, 1383° / 67°0.11
83 °
Fairmont, Thursday, 13 August
Light rain. High 83°, low 67°.
Pressure29.94 inHg
Wind17.2 mph E
Humidity50%
Visibility—
Dew point61°
Fri, 1467° / 62°0.14
67 °
Fairmont, Friday, 14 August
Light rain. High 67°, low 62°.
Pressure30.09 inHg
Wind16.4 mph E
Humidity91%
Visibility—
Dew point63°
Sat, 1585° / 63°0.16
85 °
Fairmont, Saturday, 15 August
Light rain. High 85°, low 63°.
Pressure30.09 inHg
Wind14.4 mph SE
Humidity68%
Visibility—
Dew point65°
Sun, 1683° / 69°0.01
83 °
Fairmont, Sunday, 16 August
Light rain. High 83°, low 69°.
Pressure30.06 inHg
Wind9.9 mph N
Humidity65%
Visibility—
Dew point68°
Mon, 1786° / 67°0
86 °
Fairmont, Monday, 17 August
Overcast. High 86°, low 67°.
Pressure30.06 inHg
Wind8.3 mph NE
Humidity44%
Visibility—
Dew point59°
Tue, 1894° / 68°0.01
94 °
Fairmont, Tuesday, 18 August
Light rain. High 94°, low 68°.
Pressure29.94 inHg
Wind13.6 mph SE
Humidity51%
Visibility—
Dew point65°
Wed, 19112° / 73°0
112 °
Fairmont, Wednesday, 19 August
Overcast. High 112°, low 73°.
Pressure29.80 inHg
Wind14.5 mph SW
Humidity23%
Visibility—
Dew point55°
Thu, 20115° / 80°0
115 °
Fairmont, Thursday, 20 August
Mostly clear. High 115°, low 80°.
Pressure29.77 inHg
Wind16.5 mph SW
Humidity19%
Visibility—
Dew point54°
Fri, 21100° / 77°0
100 °
Fairmont, Friday, 21 August
Overcast. High 100°, low 77°.
Pressure29.85 inHg
Wind13.5 mph NE
Humidity43%
Visibility—
Dew point69°
Sat, 22116° / 75°0
116 °
Fairmont, Saturday, 22 August
Mostly clear. High 116°, low 75°.
Pressure29.74 inHg
Wind16.3 mph W
Humidity13%
Visibility—
Dew point47°
Sun, 2398° / 77°0.04
98 °
Fairmont, Sunday, 23 August
Light rain. High 98°, low 77°.
Pressure29.80 inHg
Wind19.1 mph W
Humidity31%
Visibility—
Dew point61°
Mon, 2492° / 72°0.24
92 °
Fairmont, Monday, 24 August
Light rain. High 92°, low 72°.
Pressure29.97 inHg
Wind10.7 mph NE
Humidity68%
Visibility—
Dew point69°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2584° / 67°0.13
84 °
Fairmont, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.13 in
Chance of precipitation32%
Record high99° (2003)
Record low52° (1966)
Wed, 2684° / 67°0.17
84 °
Fairmont, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.17 in
Chance of precipitation33%
Record high100° (2003)
Record low52° (2025)
Thu, 2784° / 68°0.08
84 °
Fairmont, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.08 in
Chance of precipitation25%
Record high98° (2024)
Record low55° (2025)
Fri, 2883° / 66°0.07
83 °
Fairmont, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.07 in
Chance of precipitation25%
Record high96° (2013)
Record low48° (1986)
Sat, 2983° / 66°0.12
83 °
Fairmont, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.12 in
Chance of precipitation27%
Record high95° (1983)
Record low48° (1986)
Sun, 3082° / 66°0.09
82 °
Fairmont, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.09 in
Chance of precipitation25%
Record high99° (2013)
Record low52° (2009)
Mon, 3182° / 65°0.14
82 °
Fairmont, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.14 in
Chance of precipitation23%
Record high95° (2000)
Record low52° (1967)
Tue, 0182° / 65°0.16
82 °
Fairmont, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.16 in
Chance of precipitation22%
Record high97° (2011)
Record low48° (1967)
Wed, 0282° / 65°0.07
82 °
Fairmont, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation25%
Record high94° (1960)
Record low51° (1974)
Thu, 0381° / 65°0.08
81 °
Fairmont, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.08 in
Chance of precipitation28%
Record high96° (1960)
Record low47° (1974)
Fri, 0480° / 63°0.09
80 °
Fairmont, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation20%
Record high96° (1960)
Record low42° (1974)
Sat, 0581° / 63°0.05
81 °
Fairmont, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.05 in
Chance of precipitation15%
Record high95° (1960)
Record low48° (1974)
Sun, 0680° / 64°0.12
80 °
Fairmont, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.12 in
Chance of precipitation22%
Record high96° (1960)
Record low48° (1962)
Mon, 0780° / 63°0.15
80 °
Fairmont, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.15 in
Chance of precipitation28%
Record high95° (1960)
Record low48° (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 Fairmont, 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 Fairmont, 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.