Monthly outlook for Union Gap, WA: average high 63.8°, average low 46.2°. That is 2.1° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 16 October (71°), the coolest 12 October (39.2°).
63.8°/46.2°
Average high / low
+2.1°
Above normal
1 / 3
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
64.2°
61.7°
+1.4°
22 October – 31 October
63.1°
55.5°
+4.2°
1 November – 10 November
at normal
50.2°
—
October records over 66 years
87.8°6 October 2014All-time high
17.6°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Yakima (3 mi).
Tue, 1364° / 42°0
64 °
Union Gap, Tuesday, 13 October
Clear. High 64°, low 42°.
Pressure30.18 inHg
Wind2.3 mph SE
Humidity39%
Visibility6.2 mi
Dew point30°
Wed, 1470° / 45°0
70 °
Union Gap, Wednesday, 14 October
Clear. High 70°, low 45°.
Pressure30.21 inHg
Wind2.6 mph SE
Humidity38%
Visibility6.2 mi
Dew point38°
Thu, 1569° / 47°0
69 °
Union Gap, Thursday, 15 October
Mostly clear. High 69°, low 47°.
Pressure30.42 inHg
Wind1.9 mph NE
Humidity36%
Visibility6.2 mi
Dew point38°
Fri, 1671° / 47°0
71 °
Union Gap, Friday, 16 October
Clear. High 71°, low 47°.
Pressure30.21 inHg
Wind3 mph SE
Humidity34%
Visibility—
Dew point33°
Sat, 1767° / 49°0
67 °
Union Gap, Saturday, 17 October
Overcast. High 67°, low 49°.
Pressure30.00 inHg
Wind7.8 mph N
Humidity42%
Visibility—
Dew point38°
Sun, 1863° / 47°0
63 °
Union Gap, Sunday, 18 October
Mostly clear. High 63°, low 47°.
Pressure30.06 inHg
Wind6.3 mph SE
Humidity40%
Visibility—
Dew point32°
Mon, 1957° / 47°0.2
57 °
Union Gap, Monday, 19 October
Rain. High 57°, low 47°.
Pressure29.83 inHg
Wind5.7 mph SE
Humidity84%
Visibility—
Dew point45°
Tue, 2059° / 42°0
59 °
Union Gap, Tuesday, 20 October
Partly cloudy. High 59°, low 42°.
Pressure29.94 inHg
Wind4.1 mph N
Humidity54%
Visibility—
Dew point34°
Wed, 2160° / 44°0
60 °
Union Gap, Wednesday, 21 October
Clear. High 60°, low 44°.
Pressure30.15 inHg
Wind5.3 mph SE
Humidity49%
Visibility—
Dew point33°
Thu, 2262° / 47°0
62 °
Union Gap, Thursday, 22 October
Partly cloudy. High 62°, low 47°.
Pressure30.24 inHg
Wind3 mph N
Humidity48%
Visibility—
Dew point36°
Fri, 2363° / 47°0
63 °
Union Gap, Friday, 23 October
Clear. High 63°, low 47°.
Pressure30.09 inHg
Wind4.2 mph NW
Humidity45%
Visibility—
Dew point34°
Sat, 2464° / 49°0
64 °
Union Gap, Saturday, 24 October
Mostly clear. High 64°, low 49°.
Pressure30.21 inHg
Wind4.4 mph NW
Humidity44%
Visibility—
Dew point35°
Sun, 2562° / 48°0
62 °
Union Gap, Sunday, 25 October
Mostly clear. High 62°, low 48°.
Pressure30.24 inHg
Wind4.4 mph S
Humidity42%
Visibility—
Dew point33°
Mon, 2662° / 47°0
62 °
Union Gap, Monday, 26 October
Partly cloudy. High 62°, low 47°.
Pressure30.06 inHg
Wind3.5 mph S
Humidity42%
Visibility—
Dew point32°
Tue, 2765° / 53°0
65 °
Union Gap, Tuesday, 27 October
Overcast. High 65°, low 53°.
Pressure29.91 inHg
Wind5.5 mph NE
Humidity53%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2854° / 36°0.05
54 °
Union Gap, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low36°
Average precipitation0.05 in
Chance of precipitation33%
Record high66° (2021)
Record low21° (1971)
Thu, 2953° / 36°0.05
53 °
Union Gap, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.05 in
Chance of precipitation28%
Record high70° (1965)
Record low20° (1991)
Fri, 3053° / 36°0.05
53 °
Union Gap, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.05 in
Chance of precipitation25%
Record high66° (1988)
Record low18° (1991)
Sat, 3153° / 36°0.09
53 °
Union Gap, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.09 in
Chance of precipitation32%
Record high67° (1967)
Record low20° (2002)
Sun, 0151° / 35°0.07
51 °
Union Gap, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.07 in
Chance of precipitation33%
Record high65° (1965)
Record low19° (2002)
Mon, 0251° / 35°0.04
51 °
Union Gap, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.04 in
Chance of precipitation27%
Record high63° (2018)
Record low23° (2002)
Tue, 0352° / 35°0.03
52 °
Union Gap, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.03 in
Chance of precipitation13%
Record high65° (1975)
Record low21° (1973)
Wed, 0452° / 36°0.12
52 °
Union Gap, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.12 in
Chance of precipitation40%
Record high67° (2020)
Record low24° (1973)
Thu, 0551° / 35°0.07
51 °
Union Gap, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.07 in
Chance of precipitation32%
Record high63° (2012)
Record low7° (1973)
Fri, 0650° / 35°0.07
50 °
Union Gap, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.07 in
Chance of precipitation33%
Record high62° (2006)
Record low18° (2003)
Sat, 0750° / 35°0.08
50 °
Union Gap, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.08 in
Chance of precipitation38%
Record high64° (1978)
Record low16° (1973)
Sun, 0849° / 33°0.05
49 °
Union Gap, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.05 in
Chance of precipitation17%
Record high58° (2016)
Record low23° (1973)
Mon, 0948° / 33°0.05
48 °
Union Gap, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.05 in
Chance of precipitation32%
Record high61° (2016)
Record low22° (2020)
Tue, 1048° / 33°0.06
48 °
Union Gap, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation30%
Record high62° (1989)
Record low12° (1986)
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 Gap, 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 Gap, 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.