As of 09:17 PDT

Weather in Union Mill, WA

46°

Union Mill, Saturday, 10 October, 09:17

Overcast. Feels like 45°. High 57°, low 45°.

Pressure29.83 inHg

Wind3.4 mph W

Humidity93%

Visibility6.2 mi

Dew point44°

See detailed hourly forecast

Monthly outlook for Union Mill, WA: average high 62.5°, average low 44.8°. That is 1.6° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 6 days and 2.7 inches. The warmest day looks like 16 October (73.2°), the coolest 12 October (39.2°).

62.5°/44.8°

Average high / low

+1.6°

Above normal

2 / 6

Wet days / normal

0.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	63.7°	60.6°	+1.7°
20 October – 29 October	60.5°	56.9°	+2°
30 October – 8 November	at normal	53.7°	—

October records over 66 years

87.4°1 October 1987All-time high

29.5°28 October 2023All-time low

Climate normals and records are computed from the nearest reference point — Olympia (6 mi).

Sun, 1162° / 40°

62 °

Union Mill, Sunday, 11 October

Clear. High 62°, low 40°.

Pressure29.97 inHg

Wind8.5 mph NE

Humidity54%

Visibility6.2 mi

Dew point43°

Mon, 1263° / 39°

63 °

Union Mill, Monday, 12 October

Clear. High 63°, low 39°.

Pressure30.06 inHg

Wind1.7 mph E

Humidity57%

Visibility1.2 mi

Dew point42°

Tue, 1364° / 40°

64 °

Union Mill, Tuesday, 13 October

Clear. High 64°, low 40°.

Pressure30.15 inHg

Wind0.2 mph S

Humidity63%

Visibility6.2 mi

Dew point45°

Wed, 1464° / 44°

64 °

Union Mill, Wednesday, 14 October

Clear. High 64°, low 44°.

Pressure30.24 inHg

Wind3.6 mph SE

Humidity67%

Visibility—

Dew point45°

Thu, 1570° / 48°

70 °

Union Mill, Thursday, 15 October

Clear. High 70°, low 48°.

Pressure30.27 inHg

Wind4.9 mph NE

Humidity74%

Visibility—

Dew point51°

Fri, 1673° / 45°

73 °

Union Mill, Friday, 16 October

Partly cloudy. High 73°, low 45°.

Pressure30.24 inHg

Wind3.6 mph S

Humidity38%

Visibility—

Dew point34°

Sat, 1764° / 48°

0.01

64 °

Union Mill, Saturday, 17 October

Light rain. High 64°, low 48°.

Pressure30.15 inHg

Wind5.7 mph SW

Humidity79%

Visibility—

Dew point47°

Sun, 1858° / 45°

0.03

58 °

Union Mill, Sunday, 18 October

Light rain. High 58°, low 45°.

Pressure30.15 inHg

Wind6.4 mph SW

Humidity65%

Visibility—

Dew point45°

Mon, 1961° / 45°

0.03

61 °

Union Mill, Monday, 19 October

Light rain. High 61°, low 45°.

Pressure30.09 inHg

Wind10.3 mph W

Humidity79%

Visibility—

Dew point48°

Tue, 2058° / 44°

0.33

58 °

Union Mill, Tuesday, 20 October

Rain. High 58°, low 44°.

Pressure30.15 inHg

Wind8.6 mph SW

Humidity59%

Visibility—

Dew point41°

Wed, 2160° / 45°

0.01

60 °

Union Mill, Wednesday, 21 October

Light rain. High 60°, low 45°.

Pressure30.27 inHg

Wind7.7 mph SW

Humidity72%

Visibility—

Dew point45°

Thu, 2257° / 45°

57 °

Union Mill, Thursday, 22 October

Overcast. High 57°, low 45°.

Pressure29.97 inHg

Wind4.6 mph NE

Humidity58%

Visibility—

Dew point38°

Fri, 2355° / 48°

0.29

55 °

Union Mill, Friday, 23 October

Rain. High 55°, low 48°.

Pressure29.80 inHg

Wind10.2 mph S

Humidity86%

Visibility—

Dew point47°

Sat, 2467° / 46°

67 °

Union Mill, Saturday, 24 October

Overcast. High 67°, low 46°.

Pressure30.15 inHg

Wind3.4 mph NE

Humidity79%

Visibility—

Dew point47°

Sun, 2566° / 49°

66 °

Union Mill, Sunday, 25 October

Overcast. High 66°, low 49°.

Pressure30.24 inHg

Wind3.8 mph NE

Humidity66%

Visibility—

Dew point46°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 2656° / 45°

0.23

56 °

Union Mill, Monday, 26 October

Climate normal for this date — 60-year average.

Average high56°

Average low45°

Average precipitation0.23 in

Chance of precipitation52%

Record high69° (1965)

Record low34° (1970)

Tue, 2756° / 44°

0.21

56 °

Union Mill, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high56°

Average low44°

Average precipitation0.21 in

Chance of precipitation40%

Record high67° (1968)

Record low30° (2023)

Wed, 2855° / 44°

0.24

55 °

Union Mill, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high55°

Average low44°

Average precipitation0.24 in

Chance of precipitation53%

Record high69° (1962)

Record low29° (2023)

Thu, 2955° / 44°

0.17

55 °

Union Mill, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high55°

Average low44°

Average precipitation0.17 in

Chance of precipitation48%

Record high69° (1962)

Record low31° (1971)

Fri, 3055° / 44°

0.21

55 °

Union Mill, Friday, 30 October

Climate normal for this date — 60-year average.

Average high55°

Average low44°

Average precipitation0.21 in

Chance of precipitation55%

Record high64° (1987)

Record low29° (2019)

Sat, 3154° / 44°

0.3

54 °

Union Mill, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high54°

Average low44°

Average precipitation0.3 in

Chance of precipitation52%

Record high65° (1964)

Record low31° (2002)

Sun, 0155° / 43°

0.23

55 °

Union Mill, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high55°

Average low43°

Average precipitation0.23 in

Chance of precipitation50%

Record high66° (1981)

Record low32° (2002)

Mon, 0254° / 43°

0.22

54 °

Union Mill, Monday, 2 November

Climate normal for this date — 60-year average.

Average high54°

Average low43°

Average precipitation0.22 in

Chance of precipitation55%

Record high66° (1962)

Record low34° (2002)

Tue, 0354° / 44°

0.25

54 °

Union Mill, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high54°

Average low44°

Average precipitation0.25 in

Chance of precipitation60%

Record high64° (2010)

Record low32° (1973)

Wed, 0454° / 44°

0.31

54 °

Union Mill, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high54°

Average low44°

Average precipitation0.31 in

Chance of precipitation60%

Record high67° (1980)

Record low32° (2003)

Thu, 0553° / 43°

0.2

53 °

Union Mill, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°

Average low43°

Average precipitation0.2 in

Chance of precipitation63%

Record high65° (1980)

Record low27° (1973)

Fri, 0653° / 43°

0.31

53 °

Union Mill, Friday, 6 November

Climate normal for this date — 60-year average.

Average high53°

Average low43°

Average precipitation0.31 in

Chance of precipitation62%

Record high60° (1999)

Record low31° (2003)

Sat, 0753° / 43°

0.27

53 °

Union Mill, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high53°

Average low43°

Average precipitation0.27 in

Chance of precipitation60%

Record high62° (1962)

Record low32° (2003)

Sun, 0853° / 42°

0.19

53 °

Union Mill, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high53°

Average low42°

Average precipitation0.19 in

Chance of precipitation50%

Record high67° (2016)

Record low31° (2020)

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 Mill, 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 Union Mill, 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.