Monthly outlook for Sumner, MO: average high 74.2°, average low 55.2°. That is 5° above the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 14 October (90.5°), the coolest 18 October (42°).
74.2°/55.2°
Average high / low
+5°
Above normal
3 / 4
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
81.3°
66.5°
+8.2°
17 October – 26 October
62.3°
62.3°
-0°
27 October – 5 November
at normal
57.6°
—
October records over 66 years
92.1°10 October 1963All-time high
24.1°31 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Laclede (10 mi).
Thu, 0882° / 54°0
82 °
Sumner, Thursday, 8 October
Mostly clear. High 82°, low 54°.
Pressure30.12 inHg
Wind4.3 mph SE
Humidity45%
Visibility6.2 mi
Dew point52°
Fri, 0983° / 60°0
83 °
Sumner, Friday, 9 October
Clear. High 83°, low 60°.
Pressure30.03 inHg
Wind9 mph S
Humidity63%
Visibility6.2 mi
Dew point66°
Sat, 1084° / 64°0
84 °
Sumner, Saturday, 10 October
Clear. High 84°, low 64°.
Pressure30.03 inHg
Wind8.2 mph S
Humidity51%
Visibility6.2 mi
Dew point60°
Sun, 1177° / 57°0
77 °
Sumner, Sunday, 11 October
Clear. High 77°, low 57°.
Pressure29.94 inHg
Wind2.3 mph E
Humidity56%
Visibility6.2 mi
Dew point57°
Mon, 1287° / 64°0
87 °
Sumner, Monday, 12 October
Clear. High 87°, low 64°.
Pressure29.80 inHg
Wind12 mph SW
Humidity52%
Visibility—
Dew point62°
Tue, 1372° / 60°0.08
72 °
Sumner, Tuesday, 13 October
Light rain. High 72°, low 60°.
Pressure30.00 inHg
Wind11.3 mph N
Humidity66%
Visibility—
Dew point55°
Wed, 1491° / 62°0.03
91 °
Sumner, Wednesday, 14 October
Light rain. High 91°, low 62°.
Pressure29.80 inHg
Wind18.5 mph S
Humidity66%
Visibility—
Dew point64°
Thu, 1586° / 59°0
86 °
Sumner, Thursday, 15 October
Clear. High 86°, low 59°.
Pressure29.74 inHg
Wind24.3 mph SW
Humidity32%
Visibility—
Dew point52°
Fri, 1667° / 51°0
67 °
Sumner, Friday, 16 October
Overcast. High 67°, low 51°.
Pressure30.36 inHg
Wind13.4 mph N
Humidity48%
Visibility—
Dew point44°
Sat, 1758° / 45°0
58 °
Sumner, Saturday, 17 October
Overcast. High 58°, low 45°.
Pressure30.45 inHg
Wind12.3 mph N
Humidity44%
Visibility—
Dew point32°
Sun, 1862° / 42°0
62 °
Sumner, Sunday, 18 October
Overcast. High 62°, low 42°.
Pressure30.39 inHg
Wind9.4 mph SE
Humidity39%
Visibility—
Dew point31°
Mon, 1970° / 48°0.03
70 °
Sumner, Monday, 19 October
Light rain. High 70°, low 48°.
Pressure30.30 inHg
Wind15.6 mph S
Humidity33%
Visibility—
Dew point34°
Tue, 2062° / 54°0.07
62 °
Sumner, Tuesday, 20 October
Light rain. High 62°, low 54°.
Pressure30.24 inHg
Wind10.2 mph SE
Humidity73%
Visibility—
Dew point49°
Wed, 2159° / 56°0.09
59 °
Sumner, Wednesday, 21 October
Light rain. High 59°, low 56°.
Pressure30.12 inHg
Wind6.7 mph NE
Humidity75%
Visibility—
Dew point51°
Thu, 2263° / 48°0
63 °
Sumner, Thursday, 22 October
Clear. High 63°, low 48°.
Pressure29.85 inHg
Wind9.1 mph NW
Humidity49%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2362° / 47°0.15
62 °
Sumner, Friday, 23 October
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.15 in
Chance of precipitation47%
Record high82° (2022)
Record low30° (1981)
Sat, 2461° / 46°0.14
61 °
Sumner, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high61°
Average low46°
Average precipitation0.14 in
Chance of precipitation30%
Record high80° (2012)
Record low28° (1981)
Sun, 2560° / 45°0.08
60 °
Sumner, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.08 in
Chance of precipitation28%
Record high80° (2011)
Record low29° (2013)
Mon, 2660° / 45°0.09
60 °
Sumner, Monday, 26 October
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.09 in
Chance of precipitation30%
Record high80° (1963)
Record low30° (1980)
Tue, 2759° / 44°0.08
59 °
Sumner, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.08 in
Chance of precipitation23%
Record high76° (1999)
Record low25° (1997)
Wed, 2859° / 43°0.06
59 °
Sumner, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.06 in
Chance of precipitation23%
Record high79° (2024)
Record low27° (1969)
Thu, 2960° / 44°0.08
60 °
Sumner, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.08 in
Chance of precipitation33%
Record high81° (2024)
Record low25° (1980)
Fri, 3060° / 45°0.14
60 °
Sumner, Friday, 30 October
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.14 in
Chance of precipitation37%
Record high76° (2024)
Record low26° (1993)
Sat, 3158° / 44°0.2
58 °
Sumner, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.2 in
Chance of precipitation37%
Record high77° (1968)
Record low24° (1993)
Sun, 0158° / 43°0.2
58 °
Sumner, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.2 in
Chance of precipitation32%
Record high76° (1990)
Record low21° (2023)
Mon, 0256° / 41°0.09
56 °
Sumner, Monday, 2 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.09 in
Chance of precipitation28%
Record high78° (1964)
Record low20° (1991)
Tue, 0356° / 41°0.12
56 °
Sumner, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.12 in
Chance of precipitation33%
Record high74° (1978)
Record low14° (1991)
Wed, 0455° / 41°0.1
55 °
Sumner, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.1 in
Chance of precipitation27%
Record high75° (1978)
Record low13° (1991)
Thu, 0554° / 40°0.07
54 °
Sumner, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.07 in
Chance of precipitation27%
Record high72° (1978)
Record low23° (1967)
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 Sumner, 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 Sumner, 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.