Monthly outlook for St. Mary, MO: average high 73.5°, average low 54.6°. That is 6.4° above the climate normal for October. Precipitation is expected on 4 days (about 1.8 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 5 November (82°), the coolest 4 November (46.7°).
73.5°/54.6°
Average high / low
+6.4°
Above normal
4 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
73.8°
63.5°
+5.7°
2 November – 11 November
73.1°
58.9°
+7.9°
12 November – 21 November
at normal
54.8°
—
October records over 66 years
93.6°1 October 2019All-time high
26.8°24 October 1981All-time low
Sat, 2475° / 48°0
75 °
St. Mary, Saturday, 24 October
Partly cloudy. High 75°, low 48°.
Pressure30.36 inHg
Wind3.6 mph SE
Humidity52%
Visibility6.2 mi
Dew point50°
Sun, 2576° / 48°0
76 °
St. Mary, Sunday, 25 October
Overcast. High 76°, low 48°.
Pressure30.39 inHg
Wind1.5 mph SE
Humidity54%
Visibility6.2 mi
Dew point54°
Mon, 2674° / 55°0
74 °
St. Mary, Monday, 26 October
Overcast. High 74°, low 55°.
Pressure30.33 inHg
Wind1.7 mph SW
Humidity46%
Visibility6.2 mi
Dew point51°
Tue, 2772° / 53°0
72 °
St. Mary, Tuesday, 27 October
Overcast. High 72°, low 53°.
Pressure30.24 inHg
Wind3.2 mph SE
Humidity57%
Visibility6.2 mi
Dew point52°
Wed, 2877° / 53°0
77 °
St. Mary, Wednesday, 28 October
Light rain. High 77°, low 53°.
Pressure30.18 inHg
Wind7.5 mph SW
Humidity41%
Visibility—
Dew point47°
Thu, 2980° / 56°0
80 °
St. Mary, Thursday, 29 October
Overcast. High 80°, low 56°.
Pressure30.21 inHg
Wind9 mph SW
Humidity37%
Visibility—
Dew point48°
Fri, 3077° / 58°0
77 °
St. Mary, Friday, 30 October
Overcast. High 77°, low 58°.
Pressure30.15 inHg
Wind9 mph S
Humidity28%
Visibility—
Dew point39°
Sat, 3163° / 59°0.19
63 °
St. Mary, Saturday, 31 October
Light rain. High 63°, low 59°.
Pressure30.09 inHg
Wind16.4 mph S
Humidity74%
Visibility—
Dew point54°
Sun, 0166° / 59°0.09
66 °
St. Mary, Sunday, 1 November
Light rain. High 66°, low 59°.
Pressure30.15 inHg
Wind10.5 mph SE
Humidity85%
Visibility—
Dew point59°
Mon, 0273° / 61°1.08
73 °
St. Mary, Monday, 2 November
Rain. High 73°, low 61°.
Pressure29.94 inHg
Wind18.5 mph S
Humidity76%
Visibility—
Dew point64°
Tue, 0373° / 56°0.44
73 °
St. Mary, Tuesday, 3 November
Rain. High 73°, low 56°.
Pressure30.00 inHg
Wind16.6 mph S
Humidity79%
Visibility—
Dew point60°
Wed, 0459° / 47°0
59 °
St. Mary, Wednesday, 4 November
Clear. High 59°, low 47°.
Pressure30.45 inHg
Wind15.4 mph NW
Humidity32%
Visibility—
Dew point27°
Thu, 0582° / 60°0
82 °
St. Mary, Thursday, 5 November
Partly cloudy. High 82°, low 60°.
Pressure29.80 inHg
Wind11.3 mph SW
Humidity42%
Visibility—
Dew point53°
Fri, 0674° / 56°0
74 °
St. Mary, Friday, 6 November
Overcast. High 74°, low 56°.
Pressure29.97 inHg
Wind10.3 mph W
Humidity45%
Visibility—
Dew point48°
Sat, 0778° / 57°0
78 °
St. Mary, Saturday, 7 November
Overcast. High 78°, low 57°.
Pressure29.91 inHg
Wind10.9 mph NW
Humidity37%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0859° / 43°0.03
59 °
St. Mary, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.03 in
Chance of precipitation15%
Record high79° (1999)
Record low16° (1991)
Mon, 0960° / 43°0.07
60 °
St. Mary, Monday, 9 November
Climate normal for this date — 60-year average.
Average high60°
Average low43°
Average precipitation0.07 in
Chance of precipitation25%
Record high77° (2022)
Record low19° (1991)
Tue, 1058° / 42°0.13
58 °
St. Mary, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.13 in
Chance of precipitation28%
Record high76° (1999)
Record low20° (2018)
Wed, 1156° / 40°0.11
56 °
St. Mary, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.11 in
Chance of precipitation28%
Record high76° (2010)
Record low24° (1960)
Thu, 1254° / 38°0.08
54 °
St. Mary, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.08 in
Chance of precipitation23%
Record high74° (2010)
Record low14° (2019)
Fri, 1355° / 38°0.06
55 °
St. Mary, Friday, 13 November
Climate normal for this date — 60-year average.
Average high55°
Average low38°
Average precipitation0.06 in
Chance of precipitation25%
Record high80° (1999)
Record low14° (1986)
Sat, 1455° / 39°0.09
55 °
St. Mary, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.09 in
Chance of precipitation25%
Record high78° (1971)
Record low17° (1986)
Sun, 1555° / 40°0.18
55 °
St. Mary, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.18 in
Chance of precipitation37%
Record high79° (2025)
Record low24° (2014)
Mon, 1655° / 39°0.13
55 °
St. Mary, Monday, 16 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.13 in
Chance of precipitation27%
Record high73° (2001)
Record low24° (1970)
Tue, 1756° / 39°0.13
56 °
St. Mary, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high56°
Average low39°
Average precipitation0.13 in
Chance of precipitation27%
Record high76° (2016)
Record low11° (1997)
Wed, 1855° / 40°0.15
55 °
St. Mary, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.15 in
Chance of precipitation32%
Record high78° (2025)
Record low16° (2014)
Thu, 1955° / 40°0.09
55 °
St. Mary, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.09 in
Chance of precipitation38%
Record high73° (1985)
Record low20° (2022)
Fri, 2054° / 39°0.13
54 °
St. Mary, Friday, 20 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.13 in
Chance of precipitation30%
Record high71° (1979)
Record low21° (2022)
Sat, 2153° / 39°0.11
53 °
St. Mary, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.11 in
Chance of precipitation27%
Record high70° (1990)
Record low21° (1964)
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 St. Mary, 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 St. Mary, 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.