Monthly outlook for Union, MO: average high 74.9°, average low 51.7°. That is 3.6° above the climate normal for October. Precipitation is expected on 3 days (about 1.8 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 12 October (92.9°), the coolest 18 October (34°).
74.9°/51.7°
Average high / low
+3.6°
Above normal
3 / 4
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
83.3°
69.7°
+7.5°
17 October – 26 October
60.9°
65.4°
-2.5°
27 October – 5 November
at normal
61.2°
—
October records over 66 years
92.8°10 October 1963All-time high
27.7°31 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Pacific (13 mi).
Thu, 0884° / 50°0
84 °
Union, Thursday, 8 October
Mostly clear. High 84°, low 50°.
Pressure30.12 inHg
Wind3.8 mph SE
Humidity29%
Visibility6.2 mi
Dew point44°
Fri, 0990° / 61°0
90 °
Union, Friday, 9 October
Clear. High 90°, low 61°.
Pressure30.09 inHg
Wind8.5 mph S
Humidity26%
Visibility6.2 mi
Dew point47°
Sat, 1087° / 64°0.06
87 °
Union, Saturday, 10 October
Light rain. High 87°, low 64°.
Pressure30.06 inHg
Wind7.2 mph SE
Humidity32%
Visibility6.2 mi
Dew point53°
Sun, 1177° / 61°0.53
77 °
Union, Sunday, 11 October
Rain. High 77°, low 61°.
Pressure29.85 inHg
Wind10.7 mph NE
Humidity64%
Visibility—
Dew point58°
Mon, 1293° / 62°0
93 °
Union, Monday, 12 October
Clear. High 93°, low 62°.
Pressure29.83 inHg
Wind10.5 mph SW
Humidity41%
Visibility—
Dew point59°
Tue, 1377° / 64°0.02
77 °
Union, Tuesday, 13 October
Light rain. High 77°, low 64°.
Pressure29.97 inHg
Wind11.5 mph SW
Humidity71%
Visibility—
Dew point61°
Wed, 1483° / 57°0
83 °
Union, Wednesday, 14 October
Partly cloudy. High 83°, low 57°.
Pressure29.97 inHg
Wind13.9 mph SE
Humidity42%
Visibility—
Dew point49°
Thu, 1593° / 62°1.17
93 °
Union, Thursday, 15 October
Heavy rain. High 93°, low 62°.
Pressure29.74 inHg
Wind18.1 mph SW
Humidity40%
Visibility—
Dew point62°
Fri, 1661° / 48°0
61 °
Union, Friday, 16 October
Clear. High 61°, low 48°.
Pressure30.18 inHg
Wind13.4 mph NW
Humidity36%
Visibility—
Dew point32°
Sat, 1752° / 38°0
52 °
Union, Saturday, 17 October
Mostly clear. High 52°, low 38°.
Pressure30.30 inHg
Wind14.3 mph N
Humidity42%
Visibility—
Dew point28°
Sun, 1857° / 34°0
57 °
Union, Sunday, 18 October
Mostly clear. High 57°, low 34°.
Pressure30.33 inHg
Wind6.6 mph NW
Humidity32%
Visibility—
Dew point24°
Mon, 1965° / 38°0
65 °
Union, Monday, 19 October
Partly cloudy. High 65°, low 38°.
Pressure30.24 inHg
Wind7.5 mph S
Humidity26%
Visibility—
Dew point25°
Tue, 2065° / 42°0
65 °
Union, Tuesday, 20 October
Partly cloudy. High 65°, low 42°.
Pressure30.42 inHg
Wind6.9 mph E
Humidity28%
Visibility—
Dew point28°
Wed, 2163° / 45°0.02
63 °
Union, Wednesday, 21 October
Light rain. High 63°, low 45°.
Pressure30.33 inHg
Wind13.8 mph NW
Humidity31%
Visibility—
Dew point30°
Thu, 2262° / 44°0.02
62 °
Union, Thursday, 22 October
Light rain. High 62°, low 44°.
Pressure30.21 inHg
Wind9.4 mph NW
Humidity53%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2366° / 50°0.11
66 °
Union, Friday, 23 October
Climate normal for this date — 60-year average.
Average high66°
Average low50°
Average precipitation0.11 in
Chance of precipitation35%
Record high83° (1963)
Record low35° (1982)
Sat, 2464° / 49°0.09
64 °
Union, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high64°
Average low49°
Average precipitation0.09 in
Chance of precipitation25%
Record high82° (2012)
Record low29° (1981)
Sun, 2563° / 48°0.14
63 °
Union, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high63°
Average low48°
Average precipitation0.14 in
Chance of precipitation28%
Record high81° (1963)
Record low32° (2013)
Mon, 2663° / 47°0.14
63 °
Union, Monday, 26 October
Climate normal for this date — 60-year average.
Average high63°
Average low47°
Average precipitation0.14 in
Chance of precipitation35%
Record high83° (1963)
Record low31° (1962)
Tue, 2763° / 47°0.1
63 °
Union, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high63°
Average low47°
Average precipitation0.1 in
Chance of precipitation27%
Record high82° (2023)
Record low34° (2001)
Wed, 2862° / 46°0.06
62 °
Union, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.06 in
Chance of precipitation20%
Record high80° (1999)
Record low33° (1969)
Thu, 2962° / 47°0.14
62 °
Union, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.14 in
Chance of precipitation28%
Record high82° (2024)
Record low28° (2017)
Fri, 3064° / 47°0.12
64 °
Union, Friday, 30 October
Climate normal for this date — 60-year average.
Average high64°
Average low47°
Average precipitation0.12 in
Chance of precipitation28%
Record high81° (1971)
Record low30° (1980)
Sat, 3163° / 48°0.15
63 °
Union, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high63°
Average low48°
Average precipitation0.15 in
Chance of precipitation40%
Record high81° (1968)
Record low28° (2023)
Sun, 0162° / 47°0.17
62 °
Union, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.17 in
Chance of precipitation28%
Record high80° (2016)
Record low26° (2023)
Mon, 0260° / 45°0.09
60 °
Union, Monday, 2 November
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.09 in
Chance of precipitation32%
Record high80° (2016)
Record low27° (1966)
Tue, 0360° / 44°0.11
60 °
Union, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.11 in
Chance of precipitation30%
Record high79° (1987)
Record low20° (1991)
Wed, 0458° / 45°0.15
58 °
Union, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high58°
Average low45°
Average precipitation0.15 in
Chance of precipitation27%
Record high79° (1978)
Record low19° (1991)
Thu, 0558° / 44°0.17
58 °
Union, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.17 in
Chance of precipitation37%
Record high79° (1978)
Record low25° (1991)
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 Union, 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 Union, 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.