Union Gap, Washington Climate
United States
Pop. 6,037 Elev. 297 m / 974 ft
TZ: America/Los_Angeles (UTC-7) ·
Union Gap is largely arid, with hot summers peaking at 93°F (34°C) in July and cold winters around 25°F (-4°C) in January. Precipitation occurs on roughly 22 days per year (13.1 in / 334 mm total), with snow on 4 days and 24 in (604 mm) of annual accumulation. The city averages 157 sunny days per year. Nearby lake water reaches 76°F (25°C) in summer.
| Temperature | 93°F (34°C) high | 25°F (-4°C) low |
| Feels like | 85°F (29°C) high | 25°F (-4°C) low |
| Rain | 22 days | 13.1 in (334 mm) /yr |
| Snow | 4 days | 23.8 in (604 mm) /yr |
| Sky | 157 sunny | 1 stormy |
| Wind | 2.1 mph (0.9 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, May, Jun, Sep, Oct
Sky & Air by Month
Cloud cover (%)
47
Jan 66
Feb 69
Mar 38
Apr 43
May 31
Jun 24
Jul 39
Aug 30
Sep 47
Oct 75
Nov 72
Dec Humidity (%)
76
Jan 72
Feb 61
Mar 43
Apr 33
May 32
Jun 32
Jul 35
Aug 43
Sep 57
Oct 79
Nov 78
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 3 mi Yakima Air Terminal McAllister Field (YKM)
Ski resort 42 mi Reecer Creek Sno-Park
National park 45 mi Hanford Reach National Monument
Mountain peak
(5,115 ft) 26 mi Cleman Mountain
Hospital 3 mi Yakima Regional Medical & Cardiac Center
Hiking trail 29 mi William O. Douglas Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 40°F 5°C | 25°F -4°C | 0.6 in 15 mm | 8.5 in217 mm | 14 |
| February | 42°F 6°C | 27°F -3°C | 1.3 in 34 mm | 11.9 in301 mm | 7 |
| March | 57°F 14°C | 37°F 3°C | 1.7 in 42 mm | 0.1 in3 mm | 6 |
| April | 67°F 19°C | 38°F 4°C | 0.4 in 10 mm | — | 19 |
| May | 77°F 25°C | 47°F 9°C | 0.1 in 3 mm | — | 15 |
| June | 86°F 30°C | 55°F 13°C | 0.1 in 2 mm | — | 20 |
| July | 93°F 34°C | 60°F 16°C | 0.1 in 2 mm | — | 25 |
| August | 91°F 33°C | 60°F 16°C | 0.4 in 9 mm | — | 17 |
| September | 85°F 30°C | 55°F 13°C | 0.2 in 4 mm | — | 18 |
| October | 63°F 17°C | 40°F 4°C | 1.0 in 24 mm | 0.0 in0 mm | 12 |
| November | 51°F 11°C | 37°F 3°C | 2.4 in 60 mm | 0.3 in7 mm | 2 |
| December | 47°F 9°C | 34°F 1°C | 5.0 in 127 mm | 3.0 in76 mm | 2 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 14 | 0 |
| February | 7 | 0 |
| March | 6 | 1 |
| April | 19 | 0 |
| May | 15 | 0 |
| June | 20 | 0 |
| July | 25 | 0 |
| August | 17 | 0 |
| September | 18 | 0 |
| October | 12 | 0 |
| November | 2 | 0 |
| December | 2 | 0 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 32°F 0°C |
| February | 32°F 0°C |
| March | 37°F 3°C |
| April | 52°F 11°C |
| May | 61°F 16°C |
| June | 71°F 22°C |
| July | 76°F 25°C |
| August | 76°F 25°C |
| September | 72°F 22°C |
| October | 55°F 13°C |
| November | 45°F 7°C |
| December | 39°F 4°C |