Joint Base Lewis McChord, Washington Climate
United States
Pop. 11,046 Elev. 82 m / 269 ft
TZ: America/Los_Angeles (UTC-7) ·
Summers in Joint Base Lewis McChord are mild, with July highs around 78°F (26°C), while winters are cool with January lows of 34°F (1°C). Expect around 82 rainy days annually (52.2 in / 1326 mm total), with 12 in (301 mm) of annual snowfall. The city averages 82 sunny days per year and around 25 thunderstorm days. Ocean water temperatures reach 61°F (16°C) in summer.
| Temperature | 78°F (25°C) high | 34°F (1°C) low |
| Feels like | 33°F (1°C) low | |
| Rain | 82 days | 52.2 in (1326 mm) /yr |
| Snow | 0 days | 11.9 in (301 mm) /yr |
| Sky | 82 sunny | 25 stormy |
| Wind | 2.9 mph (1.3 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, May, Jun, Jul, Aug, Sep
Sky & Air by Month
Cloud cover (%)
55
Jan 72
Feb 86
Mar 57
Apr 63
May 51
Jun 39
Jul 55
Aug 52
Sep 61
Oct 85
Nov 85
Dec Humidity (%)
80
Jan 80
Feb 79
Mar 66
Apr 67
May 66
Jun 63
Jul 70
Aug 76
Sep 80
Oct 87
Nov 90
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 11 mi Tacoma Narrows Airport (TIW)
Ski resort 53 mi Crystal Mountain
National park 96 mi Discovery Island Marine Provincial Park
Mountain peak
(5,105 ft) 32 mi Poch Peak
Hospital 1 mi Madigan Army Medical Center
Hiking trail 14 mi Outside Loop Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 45°F 7°C | 34°F 1°C | 2.7 in 69 mm | 0.2 in6 mm | 9 |
| February | 46°F 8°C | 35°F 2°C | 5.8 in 148 mm | 9.7 in245 mm | 5 |
| March | 54°F 12°C | 41°F 5°C | 7.7 in 195 mm | 1.4 in35 mm | 1 |
| April | 60°F 16°C | 43°F 6°C | 3.4 in 86 mm | — | 9 |
| May | 65°F 19°C | 47°F 8°C | 1.7 in 44 mm | — | 6 |
| June | 72°F 22°C | 51°F 11°C | 0.7 in 19 mm | — | 12 |
| July | 78°F 25°C | 54°F 12°C | 0.1 in 2 mm | — | 16 |
| August | 77°F 25°C | 57°F 14°C | 1.7 in 44 mm | — | 8 |
| September | 72°F 22°C | 53°F 12°C | 1.3 in 34 mm | — | 9 |
| October | 59°F 15°C | 45°F 7°C | 6.2 in 157 mm | — | 6 |
| November | 53°F 12°C | 44°F 7°C | 7.5 in 191 mm | — | 0 |
| December | 49°F 9°C | 41°F 5°C | 13.3 in 338 mm | 0.6 in15 mm | 1 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 9 | 0 |
| February | 5 | 4 |
| March | 1 | 3 |
| April | 9 | 2 |
| May | 6 | 0 |
| June | 12 | 1 |
| July | 16 | 0 |
| August | 8 | 0 |
| September | 9 | 1 |
| October | 6 | 6 |
| November | 0 | 3 |
| December | 1 | 5 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 48°F 9°C | 41°F 5°C |
| February | 47°F 8°C | 38°F 4°C |
| March | 48°F 9°C | 40°F 5°C |
| April | 53°F 11°C | 44°F 7°C |
| May | 55°F 13°C | 50°F 10°C |
| June | 60°F 16°C | 58°F 14°C |
| July | 60°F 16°C | 64°F 18°C |
| August | 61°F 16°C | 67°F 19°C |
| September | 61°F 16°C | 65°F 18°C |
| October | 57°F 14°C | 55°F 13°C |
| November | 52°F 11°C | 49°F 9°C |
| December | 50°F 10°C | 46°F 8°C |