Custom Merch for Sports Teams in Seattle, WA
Merch Mob makes printed jerseys, practice shirts, and warmups and team hoodies for sports teams in Seattle, WA, at its shop in Montclair, CA, and ships them to Seattle. Only 14% of Seattle's residents are under 18, well under the US share of 22% (Census ACS, 2020-2024), so adult leagues and adult size runs are likely to make up most team orders, with youth sizes as a smaller add-on.
Seattle by the numbers
Seattle has grown to 784,777 residents, up 6.5% since 2020 (Census estimates).
King County has 14 sports teams and clubs with paid employees (Census County Business Patterns, 2023). That is 0.060 for every 10,000 residents, above the national figure of 0.044.
That count is mostly professional and semi-professional teams with a payroll; most youth and amateur clubs are not in it.
King County as a whole has 2,344,939 residents, up 3.3% since 2020. King County has one sports team or club for every 167,500 residents.
- Population, 2025
- 784,777
- Since 2020
- +6.5%
- County
- King County
- Sports teams and clubs in King County, 2023
- 14
- Per 10,000 county residents
- 0.060 (US 0.044)
- Time zone
- Pacific
- Median age
- 35.6 (US 38.9)
- Residents under 18
- 14% (US 22%)
- Warmest month, average high
- August, 77°F
- Coldest month, average low
- December, 36°F
- Days at 90°F or hotter, a year
- 3
- Nights at 32°F or colder, a year
- 30
- Rain, a year
- 36 in
- USPS zone from the shop
- 5
Weather: Seattle Boeing Field station, 5 mi from Seattle's center (NOAA 1991-2020 Climate Normals). People: Census ACS 2020-2024. Counts: CBP 2023, by county, paid-employee establishments. Population: Census, July 2025.
What Seattle's weather means for sports teams
With 7 months a year averaging highs under 65°F, half the calendar or more is warmup weather in Seattle, so a hoodie or quarter-zip belongs in every player's order, not just the coaches'. Tee weather is short, with average highs of 70°F or more only from June to September, so long-sleeve practice shirts get more use than short sleeves over a full year. In December, when highs average 48°F, practice calls for a long sleeve or a performance base layer under the team tee. Expect about 30 nights a year at 32°F or below, enough that the earliest games in the coldest weeks start near freezing; team joggers over game shorts keep players warm until kickoff. Rain peaks in November at about 5.8 inches, so teams playing then need practice gear that dries fast and a water-resistant jacket for the bench.
| Month in Seattle | Average high | Average low | Rain (in) | What the team wears |
|---|---|---|---|---|
| January | 49°F | 37°F | 5.2 | Warmup hoodies and long sleeves |
| February | 51°F | 37°F | 3.7 | Warmup hoodies and long sleeves |
| March | 55°F | 39°F | 3.9 | Warmup hoodies and long sleeves |
| April | 60°F | 44°F | 2.9 | Warmup hoodies and long sleeves |
| May | 67°F | 49°F | 2 | Tees plus warmup quarter-zips |
| June | 71°F | 54°F | 1.2 | Practice tees and game jerseys |
| July | 77°F | 58°F | 0.6 | Practice tees and game jerseys |
| August | 77°F | 58°F | 0.8 | Practice tees and game jerseys |
| September | 72°F | 54°F | 1.4 | Practice tees and game jerseys |
| October | 61°F | 46°F | 3.5 | Warmup hoodies and long sleeves |
| November | 53°F | 40°F | 5.8 | Warmup hoodies and long sleeves |
| December | 48°F | 36°F | 5.5 | Warmup hoodies and long sleeves |
Made in So Cal, shipped to Seattle.
Orders ship to Seattle from the shop; there is no office or pickup point in Washington.
Seattle is about 967 miles from Merch Mob's shop in Montclair, CA, a straight-line distance. From the shop's ZIP code, Seattle is USPS zone 5. Seattle shares the shop's Pacific time zone.
From the production floor
Merch Mob production in Southern California.
Ordering from Seattle
When do teams in Seattle need warmup gear?
Through a long cool season: Seattle's average high is under 65°F from October to April, so warmups get steady use; have them delivered before October and keep practice tees for the warm months.
More for Seattle
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