As of 07:03 PDT

Weather in Union, WA

47°

Union, Thursday, 8 October, 07:03

Overcast. Feels like 47°. High 64°, low 47°.

Pressure30.09 inHg

Wind0.2 mph W

Humidity97%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Monthly outlook for Union, WA: average high 61.5°, average low 44°. That is 1° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 6 days and 2.4 inches. The warmest day looks like 17 October (67.4°), the coolest 23 October (38.7°).

61.5°/44°

Average high / low

+1°

Above normal

1 / 6

Wet days / normal

0.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	61.8°	60.8°	+0.6°
18 October – 27 October	61.1°	57.1°	+2.2°
28 October – 6 November	at normal	53.5°	—

October records over 66 years

87.1°1 October 1987All-time high

28.6°28 October 2023All-time low

Climate normals and records are computed from the nearest reference point — Grapeview (12 mi).

Fri, 0959° / 47°

0.01

59 °

Union, Friday, 9 October

Light rain. High 59°, low 47°.

Pressure29.80 inHg

Wind9.9 mph SW

Humidity49%

Visibility6.2 mi

Dew point42°

Sat, 1056° / 42°

56 °

Union, Saturday, 10 October

Light rain. High 56°, low 42°.

Pressure29.85 inHg

Wind7.8 mph NE

Humidity68%

Visibility6.2 mi

Dew point44°

Sun, 1161° / 41°

61 °

Union, Sunday, 11 October

Clear. High 61°, low 41°.

Pressure29.97 inHg

Wind1.2 mph SE

Humidity44%

Visibility6.2 mi

Dew point36°

Mon, 1262° / 40°

62 °

Union, Monday, 12 October

Clear. High 62°, low 40°.

Pressure30.03 inHg

Wind1.8 mph S

Humidity49%

Visibility—

Dew point34°

Tue, 1363° / 45°

0.02

63 °

Union, Tuesday, 13 October

Light rain. High 63°, low 45°.

Pressure30.03 inHg

Wind9.5 mph SW

Humidity57%

Visibility—

Dew point40°

Wed, 1459° / 45°

59 °

Union, Wednesday, 14 October

Mostly clear. High 59°, low 45°.

Pressure30.06 inHg

Wind9.5 mph SW

Humidity60%

Visibility—

Dew point40°

Thu, 1562° / 41°

62 °

Union, Thursday, 15 October

Clear. High 62°, low 41°.

Pressure30.42 inHg

Wind5.6 mph NE

Humidity64%

Visibility—

Dew point40°

Fri, 1665° / 43°

65 °

Union, Friday, 16 October

Mostly clear. High 65°, low 43°.

Pressure30.30 inHg

Wind5.1 mph E

Humidity48%

Visibility—

Dew point37°

Sat, 1767° / 44°

67 °

Union, Saturday, 17 October

Overcast. High 67°, low 44°.

Pressure30.18 inHg

Wind3.5 mph N

Humidity46%

Visibility—

Dew point36°

Sun, 1864° / 46°

0.04

64 °

Union, Sunday, 18 October

Light rain. High 64°, low 46°.

Pressure30.09 inHg

Wind9 mph SW

Humidity49%

Visibility—

Dew point38°

Mon, 1962° / 50°

62 °

Union, Monday, 19 October

Overcast. High 62°, low 50°.

Pressure30.36 inHg

Wind3.5 mph SW

Humidity85%

Visibility—

Dew point52°

Tue, 2062° / 47°

62 °

Union, Tuesday, 20 October

Overcast. High 62°, low 47°.

Pressure30.42 inHg

Wind3.1 mph S

Humidity72%

Visibility—

Dew point47°

Wed, 2163° / 44°

63 °

Union, Wednesday, 21 October

Overcast. High 63°, low 44°.

Pressure30.47 inHg

Wind6.9 mph NE

Humidity66%

Visibility—

Dew point42°

Thu, 2259° / 43°

59 °

Union, Thursday, 22 October

Overcast. High 59°, low 43°.

Pressure30.15 inHg

Wind7 mph W

Humidity58%

Visibility—

Dew point39°

Fri, 2356° / 39°

0.04

56 °

Union, Friday, 23 October

Light rain. High 56°, low 39°.

Pressure30.21 inHg

Wind5.9 mph SW

Humidity74%

Visibility—

Dew point40°

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

Sat, 2456° / 47°

0.2

56 °

Union, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high56°

Average low47°

Average precipitation0.2 in

Chance of precipitation48%

Record high69° (1965)

Record low38° (2024)

Sun, 2556° / 47°

0.2

56 °

Union, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high56°

Average low47°

Average precipitation0.2 in

Chance of precipitation50%

Record high68° (1965)

Record low37° (2020)

Mon, 2655° / 46°

0.22

55 °

Union, Monday, 26 October

Climate normal for this date — 60-year average.

Average high55°

Average low46°

Average precipitation0.22 in

Chance of precipitation55%

Record high69° (1965)

Record low36° (2020)

Tue, 2755° / 46°

0.23

55 °

Union, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high55°

Average low46°

Average precipitation0.23 in

Chance of precipitation40%

Record high66° (1968)

Record low29° (2023)

Wed, 2855° / 45°

0.23

55 °

Union, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high55°

Average low45°

Average precipitation0.23 in

Chance of precipitation52%

Record high68° (1962)

Record low29° (2023)

Thu, 2954° / 45°

0.17

54 °

Union, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high54°

Average low45°

Average precipitation0.17 in

Chance of precipitation45%

Record high68° (1962)

Record low34° (2023)

Fri, 3054° / 45°

0.21

54 °

Union, Friday, 30 October

Climate normal for this date — 60-year average.

Average high54°

Average low45°

Average precipitation0.21 in

Chance of precipitation52%

Record high62° (1987)

Record low36° (1991)

Sat, 3154° / 45°

0.28

54 °

Union, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high54°

Average low45°

Average precipitation0.28 in

Chance of precipitation50%

Record high63° (1964)

Record low33° (1984)

Sun, 0154° / 45°

0.22

54 °

Union, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high54°

Average low45°

Average precipitation0.22 in

Chance of precipitation53%

Record high65° (1981)

Record low35° (1973)

Mon, 0254° / 45°

0.22

54 °

Union, Monday, 2 November

Climate normal for this date — 60-year average.

Average high54°

Average low45°

Average precipitation0.22 in

Chance of precipitation55%

Record high66° (1962)

Record low36° (1973)

Tue, 0353° / 45°

0.24

53 °

Union, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high53°

Average low45°

Average precipitation0.24 in

Chance of precipitation55%

Record high64° (2010)

Record low34° (2017)

Wed, 0454° / 45°

0.3

54 °

Union, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high54°

Average low45°

Average precipitation0.3 in

Chance of precipitation60%

Record high66° (1980)

Record low34° (2003)

Thu, 0553° / 44°

0.19

53 °

Union, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°

Average low44°

Average precipitation0.19 in

Chance of precipitation60%

Record high64° (1997)

Record low32° (1973)

Fri, 0652° / 44°

0.3

52 °

Union, Friday, 6 November

Climate normal for this date — 60-year average.

Average high52°

Average low44°

Average precipitation0.3 in

Chance of precipitation58%

Record high58° (1976)

Record low35° (2017)

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, 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, 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.