Monthly outlook for Swiss, MO: average high 100.7°, average low 72.9°. That is 8.1° above the climate normal for August. Precipitation is expected on 5 days (about 0.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 20 August (113.4°), the coolest 14 August (66.6°).
100.7°/72.9°
Average high / low
+8.1°
Above normal
5 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
95.5°
86.1°
+5.2°
19 August – 28 August
109.3°
86.1°
+12.9°
29 August – 7 September
at normal
83.6°
—
August records over 66 years
104.2°14 August 2007All-time high
49.8°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — New Haven (14 mi).
Mon, 10100° / 74°0
100 °
Swiss, Monday, 10 August
Mostly clear. High 100°, low 74°.
Pressure29.94 inHg
Wind10.7 mph SW
Humidity41%
Visibility6.2 mi
Dew point67°
Tue, 11103° / 71°0
103 °
Swiss, Tuesday, 11 August
Light rain. High 103°, low 71°.
Pressure29.85 inHg
Wind11.4 mph SW
Humidity34%
Visibility6.2 mi
Dew point65°
Wed, 1298° / 76°0
98 °
Swiss, Wednesday, 12 August
Overcast. High 98°, low 76°.
Pressure29.80 inHg
Wind6.5 mph W
Humidity38%
Visibility6.2 mi
Dew point66°
Thu, 1395° / 71°0.09
95 °
Swiss, Thursday, 13 August
Light rain. High 95°, low 71°.
Pressure29.88 inHg
Wind11.6 mph E
Humidity49%
Visibility—
Dew point65°
Fri, 1478° / 67°0.03
78 °
Swiss, Friday, 14 August
Light rain. High 78°, low 67°.
Pressure30.03 inHg
Wind11.4 mph E
Humidity75%
Visibility—
Dew point64°
Sat, 1598° / 67°0
98 °
Swiss, Saturday, 15 August
Overcast. High 98°, low 67°.
Pressure30.06 inHg
Wind9.4 mph E
Humidity46%
Visibility—
Dew point64°
Sun, 1695° / 71°0
95 °
Swiss, Sunday, 16 August
Overcast. High 95°, low 71°.
Pressure30.03 inHg
Wind7.8 mph NE
Humidity51%
Visibility—
Dew point68°
Mon, 1793° / 71°0.13
93 °
Swiss, Monday, 17 August
Light rain. High 93°, low 71°.
Pressure30.03 inHg
Wind6.5 mph E
Humidity56%
Visibility—
Dew point68°
Tue, 18101° / 69°0.11
101 °
Swiss, Tuesday, 18 August
Light rain. High 101°, low 69°.
Pressure29.91 inHg
Wind7.9 mph SE
Humidity42%
Visibility—
Dew point65°
Wed, 19112° / 75°0
112 °
Swiss, Wednesday, 19 August
Clear. High 112°, low 75°.
Pressure29.83 inHg
Wind13.7 mph SE
Humidity17%
Visibility—
Dew point51°
Thu, 20113° / 81°0
113 °
Swiss, Thursday, 20 August
Clear. High 113°, low 81°.
Pressure29.83 inHg
Wind10.4 mph W
Humidity16%
Visibility—
Dew point51°
Fri, 21112° / 79°0
112 °
Swiss, Friday, 21 August
Clear. High 112°, low 79°.
Pressure29.83 inHg
Wind8.4 mph W
Humidity17%
Visibility—
Dew point50°
Sat, 22112° / 80°0.02
112 °
Swiss, Saturday, 22 August
Light rain. High 112°, low 80°.
Pressure29.83 inHg
Wind10.5 mph SW
Humidity20%
Visibility—
Dew point55°
Sun, 23106° / 73°0.07
106 °
Swiss, Sunday, 23 August
Light rain. High 106°, low 73°.
Pressure29.85 inHg
Wind12.3 mph SW
Humidity26%
Visibility—
Dew point59°
Mon, 24100° / 72°0.1
100 °
Swiss, Monday, 24 August
Light rain. High 100°, low 72°.
Pressure29.97 inHg
Wind5.7 mph NE
Humidity39%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2587° / 68°0.07
87 °
Swiss, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high87°
Average low68°
Average precipitation0.07 in
Chance of precipitation23%
Record high100° (2023)
Record low56° (2015)
Wed, 2687° / 68°0.17
87 °
Swiss, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low68°
Average precipitation0.17 in
Chance of precipitation28%
Record high100° (2003)
Record low54° (2025)
Thu, 2786° / 69°0.11
86 °
Swiss, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.11 in
Chance of precipitation28%
Record high98° (1983)
Record low54° (2025)
Fri, 2886° / 68°0.08
86 °
Swiss, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.08 in
Chance of precipitation27%
Record high98° (2000)
Record low55° (1967)
Sat, 2985° / 67°0.08
85 °
Swiss, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.08 in
Chance of precipitation32%
Record high100° (1984)
Record low50° (1986)
Sun, 3085° / 67°0.14
85 °
Swiss, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.14 in
Chance of precipitation37%
Record high97° (2013)
Record low52° (1986)
Mon, 3184° / 67°0.11
84 °
Swiss, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.11 in
Chance of precipitation27%
Record high99° (2013)
Record low56° (1967)
Tue, 0184° / 67°0.09
84 °
Swiss, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.09 in
Chance of precipitation30%
Record high100° (2011)
Record low51° (1967)
Wed, 0283° / 66°0.13
83 °
Swiss, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.13 in
Chance of precipitation40%
Record high98° (2011)
Record low51° (1974)
Thu, 0383° / 66°0.09
83 °
Swiss, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.09 in
Chance of precipitation28%
Record high96° (1960)
Record low48° (1974)
Fri, 0483° / 65°0.09
83 °
Swiss, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.09 in
Chance of precipitation22%
Record high96° (1990)
Record low46° (1974)
Sat, 0583° / 65°0.04
83 °
Swiss, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.04 in
Chance of precipitation17%
Record high97° (1990)
Record low50° (1974)
Sun, 0683° / 65°0.06
83 °
Swiss, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.06 in
Chance of precipitation25%
Record high99° (1990)
Record low51° (1988)
Mon, 0783° / 64°0.07
83 °
Swiss, Monday, 7 September
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0.07 in
Chance of precipitation32%
Record high96° (1960)
Record low50° (1988)
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 Swiss, 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 Swiss, 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.