Hermiston, Oregon Climate
United States
Pop. 17,201 Elev. 140 m / 459 ft
TZ: America/Los_Angeles (UTC-7) ·
Hermiston is largely arid, with hot summers peaking at 95°F (35°C) in July and cold winters around 28°F (-2°C) in January. Precipitation occurs on roughly 15 days per year (10.9 in / 278 mm total), with snow on 1 days and 12 in (293 mm) of annual accumulation. The city averages 149 sunny days per year. Nearby lake water reaches 75°F (24°C) in summer.
| Temperature | 95°F (35°C) high | 28°F (-2°C) low |
| Feels like | 87°F (31°C) high | 28°F (-2°C) low |
| Rain | 15 days | 10.9 in (278 mm) /yr |
| Snow | 1 days | 11.5 in (293 mm) /yr |
| Sky | 149 sunny | 4 stormy |
| Wind | 4.3 mph (1.9 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 (%)
52
Jan 67
Feb 71
Mar 38
Apr 43
May 29
Jun 23
Jul 37
Aug 30
Sep 46
Oct 76
Nov 72
Dec Humidity (%)
81
Jan 75
Feb 59
Mar 44
Apr 39
May 31
Jun 29
Jul 33
Aug 40
Sep 58
Oct 76
Nov 73
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 30 mi Tri Cities Airport (PSC)
Ski resort 54 mi Meacham Divide Nordic Area
National park 52 mi Hanford Reach National Monument
Mountain peak
(5,896 ft) 43 mi Black Mountain
Hospital 1 mi
Hiking trail 37 mi
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 43°F 6°C | 28°F -2°C | 1.3 in 34 mm | 0.2 in4 mm | 11 |
| February | 45°F 7°C | 29°F -2°C | 1.1 in 29 mm | 11.2 in285 mm | 5 |
| March | 60°F 16°C | 42°F 6°C | 1.7 in 43 mm | — | 4 |
| April | 69°F 20°C | 43°F 6°C | 0.6 in 16 mm | — | 19 |
| May | 78°F 25°C | 50°F 10°C | 0.4 in 11 mm | — | 15 |
| June | 88°F 31°C | 59°F 15°C | 0.0 in 1 mm | — | 20 |
| July | 95°F 35°C | 66°F 19°C | 0.2 in 4 mm | — | 22 |
| August | 93°F 34°C | 66°F 19°C | 0.1 in 3 mm | — | 19 |
| September | 87°F 31°C | 60°F 16°C | 0.3 in 8 mm | — | 18 |
| October | 65°F 18°C | 44°F 7°C | 1.1 in 27 mm | — | 12 |
| November | 55°F 13°C | 40°F 4°C | 1.3 in 33 mm | 0.1 in2 mm | 1 |
| December | 51°F 11°C | 38°F 3°C | 2.7 in 70 mm | 0.1 in1 mm | 3 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 11 | 0 |
| February | 5 | 1 |
| March | 4 | 2 |
| April | 19 | 0 |
| May | 15 | 0 |
| June | 20 | 0 |
| July | 22 | 0 |
| August | 19 | 0 |
| September | 18 | 0 |
| October | 12 | 1 |
| November | 1 | 0 |
| December | 3 | 0 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 40°F 4°C |
| February | 37°F 3°C |
| March | 41°F 5°C |
| April | 47°F 8°C |
| May | 57°F 14°C |
| June | 67°F 19°C |
| July | 74°F 23°C |
| August | 75°F 24°C |
| September | 74°F 23°C |
| October | 59°F 15°C |
| November | 50°F 10°C |
| December | 45°F 7°C |