Monthly outlook for South Union, WA: average high 50.4°, average low 40.5°. That is 1.3° above the climate normal for November. Precipitation is expected on 9 days (about 2.0 inches), against a normal of 10 days and 4.4 inches. The warmest day looks like 24 November (56.9°), the coolest 20 November (33.3°).
50.4°/40.5°
Average high / low
+1.3°
Above normal
9 / 10
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 November – 23 November
51°
49°
+1.1°
24 November – 3 December
49.4°
46.5°
+1.6°
4 December – 13 December
at normal
45.1°
—
November records over 66 years
67.5°4 November 1980All-time high
5.9°30 November 1985All-time low
Climate normals and records are computed from the nearest reference point — Olympia (7 mi).
Sun, 1554° / 41°0.21
54 °
South Union, Sunday, 15 November
Light rain. High 54°, low 41°.
Pressure29.85 inHg
Wind12.7 mph S
Humidity81%
Visibility3.7 mi
Dew point46°
Mon, 1651° / 39°0.09
51 °
South Union, Monday, 16 November
Rain. High 51°, low 39°.
Pressure30.09 inHg
Wind6.5 mph S
Humidity77%
Visibility6.2 mi
Dew point43°
Tue, 1751° / 38°0
51 °
South Union, Tuesday, 17 November
Partly cloudy. High 51°, low 38°.
Pressure29.94 inHg
Wind3.3 mph SE
Humidity76%
Visibility6.2 mi
Dew point42°
Wed, 1851° / 40°0.04
51 °
South Union, Wednesday, 18 November
Light rain. High 51°, low 40°.
Pressure29.88 inHg
Wind7.8 mph N
Humidity79%
Visibility—
Dew point38°
Thu, 1952° / 37°0
52 °
South Union, Thursday, 19 November
Clear. High 52°, low 37°.
Pressure30.09 inHg
Wind5.1 mph NE
Humidity81%
Visibility—
Dew point38°
Fri, 2049° / 33°0
49 °
South Union, Friday, 20 November
Clear. High 49°, low 33°.
Pressure29.94 inHg
Wind3 mph N
Humidity76%
Visibility—
Dew point34°
Sat, 2146° / 37°0.09
46 °
South Union, Saturday, 21 November
Light rain. High 46°, low 37°.
Pressure30.06 inHg
Wind3.5 mph NE
Humidity89%
Visibility—
Dew point38°
Sun, 2248° / 40°0
48 °
South Union, Sunday, 22 November
Overcast. High 48°, low 40°.
Pressure29.88 inHg
Wind6 mph NE
Humidity77%
Visibility—
Dew point37°
Mon, 2353° / 44°0.11
53 °
South Union, Monday, 23 November
Light rain. High 53°, low 44°.
Pressure29.88 inHg
Wind6.1 mph N
Humidity84%
Visibility—
Dew point44°
Tue, 2457° / 46°0.23
57 °
South Union, Tuesday, 24 November
Light rain. High 57°, low 46°.
Pressure29.65 inHg
Wind15.8 mph S
Humidity73%
Visibility—
Dew point46°
Wed, 2550° / 43°0.26
50 °
South Union, Wednesday, 25 November
Light rain. High 50°, low 43°.
Pressure29.62 inHg
Wind14.7 mph S
Humidity85%
Visibility—
Dew point43°
Thu, 2645° / 40°0.06
45 °
South Union, Thursday, 26 November
Light rain. High 45°, low 40°.
Pressure30.06 inHg
Wind7.2 mph S
Humidity90%
Visibility—
Dew point41°
Fri, 2748° / 40°0
48 °
South Union, Friday, 27 November
Overcast. High 48°, low 40°.
Pressure30.45 inHg
Wind3.1 mph SW
Humidity94%
Visibility—
Dew point44°
Sat, 2846° / 37°0
46 °
South Union, Saturday, 28 November
Overcast. High 46°, low 37°.
Pressure30.33 inHg
Wind3.8 mph S
Humidity79%
Visibility—
Dew point35°
Sun, 2951° / 43°0.78
51 °
South Union, Sunday, 29 November
Rain. High 51°, low 43°.
Pressure30.09 inHg
Wind8.9 mph S
Humidity92%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 3046° / 38°0.28
46 °
South Union, Monday, 30 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.28 in
Chance of precipitation60%
Record high55° (2008)
Record low6° (1985)
Tue, 0146° / 38°0.3
46 °
South Union, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.3 in
Chance of precipitation62%
Record high55° (2021)
Record low15° (1985)
Wed, 0246° / 38°0.38
46 °
South Union, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.38 in
Chance of precipitation63%
Record high54° (2021)
Record low23° (1985)
Thu, 0346° / 38°0.32
46 °
South Union, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.32 in
Chance of precipitation53%
Record high56° (1965)
Record low29° (1984)
Fri, 0446° / 37°0.27
46 °
South Union, Friday, 4 December
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.27 in
Chance of precipitation57%
Record high57° (2023)
Record low24° (1970)
Sat, 0545° / 37°0.23
45 °
South Union, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.23 in
Chance of precipitation52%
Record high57° (2023)
Record low25° (1972)
Sun, 0645° / 37°0.23
45 °
South Union, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.23 in
Chance of precipitation57%
Record high55° (1965)
Record low23° (1972)
Mon, 0744° / 37°0.22
44 °
South Union, Monday, 7 December
Climate normal for this date — 60-year average.
Average high44°
Average low37°
Average precipitation0.22 in
Chance of precipitation55%
Record high54° (2025)
Record low19° (1972)
Tue, 0845° / 37°0.26
45 °
South Union, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.26 in
Chance of precipitation55%
Record high56° (2015)
Record low12° (1972)
Wed, 0945° / 37°0.29
45 °
South Union, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.29 in
Chance of precipitation58%
Record high56° (2014)
Record low15° (1972)
Thu, 1045° / 37°0.36
45 °
South Union, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.36 in
Chance of precipitation68%
Record high58° (2014)
Record low16° (1972)
Fri, 1145° / 37°0.35
45 °
South Union, Friday, 11 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.35 in
Chance of precipitation68%
Record high57° (2025)
Record low25° (1972)
Sat, 1245° / 37°0.29
45 °
South Union, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.29 in
Chance of precipitation63%
Record high58° (1995)
Record low26° (1972)
Sun, 1345° / 37°0.29
45 °
South Union, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.29 in
Chance of precipitation60%
Record high59° (2025)
Record low12° (1972)
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 South Union, WA 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 South Union, WA 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.