Custom Merch for Companies in Seattle, WA
Merch Mob makes onboarding kits, everyday staff apparel, and field and customer-facing uniforms for companies in Seattle, WA, at its shop in Montclair, CA, and ships them to Seattle. Seattle skews younger than the country, with a median age of 35.6 next to 38.9 nationally (Census ACS, 2020-2024), so a soft hoodie, a heavyweight tee and a cap are the onboarding pieces most likely to be worn outside work.
Seattle by the numbers
Seattle has grown to 784,777 residents, up 6.5% since 2020 (Census estimates).
Every employer is a potential buyer of staff and client merch, so there is no single Census category to count.
King County as a whole has 2,344,939 residents, up 3.3% since 2020.
- Population, 2025
- 784,777
- Since 2020
- +6.5%
- County
- King County
- Time zone
- Pacific
- Median age
- 35.6 (US 38.9)
- 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 companies
Layering weather lasts 7 months a year in Seattle, with average highs below 65°F, so quarter-zips, soft shells and midweight hoodies get worn to work in most seasons. Plan outdoor team events and their tees for June to September, when the average high holds at 70°F or above. December lows average 36°F, so field crews starting early need an insulated vest or jacket, and a beanie is a welcome addition to a winter kit. With 30 nights a year at or below freezing, a fleece quarter-zip earns a place in any winter onboarding kit. Around 5.8 inches of rain fall in November, the wettest month, so a soft shell that sheds a shower is a better staff layer than a cotton hoodie.
| Month in Seattle | Average high | Average low | Rain (in) | What staff wear and receive |
|---|---|---|---|---|
| January | 49°F | 37°F | 5.2 | Quarter-zips, hoodies and soft shells |
| February | 51°F | 37°F | 3.7 | Quarter-zips, hoodies and soft shells |
| March | 55°F | 39°F | 3.9 | Quarter-zips, hoodies and soft shells |
| April | 60°F | 44°F | 2.9 | Quarter-zips, hoodies and soft shells |
| May | 67°F | 49°F | 2 | Polos and light quarter-zips |
| June | 71°F | 54°F | 1.2 | Soft tees and polos |
| July | 77°F | 58°F | 0.6 | Soft tees and polos |
| August | 77°F | 58°F | 0.8 | Soft tees and polos |
| September | 72°F | 54°F | 1.4 | Soft tees and polos |
| October | 61°F | 46°F | 3.5 | Quarter-zips, hoodies and soft shells |
| November | 53°F | 40°F | 5.8 | Quarter-zips, hoodies and soft shells |
| December | 48°F | 36°F | 5.5 | Quarter-zips, hoodies and soft shells |
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
What should a winter onboarding kit include for a new hire in Seattle?
With highs under 65°F from October to April and frost on some winter nights, a midweight hoodie and a lined soft shell suit a winter hire, plus a beanie for the commute.
More for Seattle
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