Tri-Cities weather in August
In August, Tri-Cities sees average daytime highs of 92°F and overnight lows near 62°F, with 0.2 in of rain across 1 wet days and about 14 hours of daylight. It is the 2nd-warmest and 11th-wettest month of the year here.
Highs ease over the month, from about 95°F in the first days to 88°F by the end. The sky is clear or mostly clear about 74% of the time in August, and the air most often feels dry.
Daylight stretches from about 14 h 42 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Tri-Cities's 2nd-clearest and 9th-windiest month. For the whole year in context, see Tri-Cities's year-round climate.
- Daytime high
- 92°
- 2nd warmest
- Overnight low
- 62°
- 11th coldest
- Rainfall
- 0.2 in
- 1 wet days
- Daylight
- 14 hours
- 5:01 AM – 7:01 PM
- Cloud cover
- 24%
- 2nd clearest
- Wind
- 5 mph
- 9th windiest
- Solar energy
- 6.77 kWh/m²
- Travel score
- 4.5
- out of 10
Temperature in August
Highs ease over the month, from about 95°F in the first days to 88°F by the end.
A typical August day in Tri-Cities reaches about 92°F in the afternoon and slips back to 62°F overnight — a 30°F spread between the day's warmth and the night's chill. On most days the high lands between 81°F and 101°F. Set against its neighbours, August runs about 2°F cooler than July and about 10°F warmer than September.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 95 | 95 | 95 | 94 | 94 | 94 | 94 | 94 | 94 | 93 | 93 | 93 | 93 | 92 | 92 | 92 | 92 | 91 | 91 | 91 | 90 | 90 | 90 | 89 | 89 | 89 | 88 | 88 | 88 | 87 | 87 |
| Avg low (°F) | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 63 | 63 | 63 | 62 | 62 | 62 | 62 | 62 | 62 | 61 | 61 | 61 | 60 | 60 | 60 | 60 | 59 | 59 | 59 | 59 | 58 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 95 | 64 |
| 2 | 95 | 64 |
| 3 | 95 | 64 |
| 4 | 94 | 64 |
| 5 | 94 | 64 |
| 6 | 94 | 64 |
| 7 | 94 | 64 |
| 8 | 94 | 64 |
| 9 | 94 | 63 |
| 10 | 93 | 63 |
| 11 | 93 | 63 |
| 12 | 93 | 63 |
| 13 | 93 | 63 |
| 14 | 92 | 62 |
| 15 | 92 | 62 |
| 16 | 92 | 62 |
| 17 | 92 | 62 |
| 18 | 91 | 62 |
| 19 | 91 | 62 |
| 20 | 91 | 61 |
| 21 | 90 | 61 |
| 22 | 90 | 61 |
| 23 | 90 | 60 |
| 24 | 89 | 60 |
| 25 | 89 | 60 |
| 26 | 89 | 60 |
| 27 | 88 | 59 |
| 28 | 88 | 59 |
| 29 | 88 | 59 |
| 30 | 87 | 59 |
| 31 | 87 | 58 |
How August really feels in Tri-Cities
Once humidity and wind are folded in, August averages 23 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Tri-Cities weather by month
How August compares with the rest of the year at a glance. August is the 2nd-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 41° / 29° | 1.3 | 8.1 | 2.3 | 8.8 | 0.2 |
| Feb | 48° / 32° | 0.9 | 6.2 | 1.3 | 10 | 2.0 |
| Mar | 58° / 38° | 0.9 | 5.9 | 0.4 | 11.6 | 4.6 |
| Apr | 68° / 44° | 0.7 | 4.9 | 0 | 13.3 | 6.9 |
| May | 77° / 52° | 0.7 | 4.5 | 0 | 14.7 | 7.6 |
| Jun | 84° / 58° | 0.5 | 2.8 | 0 | 15.5 | 6.6 |
| Jul | 93° / 64° | 0.1 | 1 | 0 | 15.2 | 3.9 |
| Aug | 92° / 62° | 0.2 | 1 | 0 | 14 | 4.5 |
| Sep | 81° / 54° | 0.3 | 1.8 | 0 | 12.3 | 7.7 |
| Oct | 66° / 44° | 0.9 | 5 | 0 | 10.7 | 6.7 |
| Nov | 50° / 35° | 1.1 | 7.3 | 0.7 | 9.2 | 2.4 |
| Dec | 41° / 29° | 1.4 | 8.4 | 2.4 | 8.5 | 0.1 |
Cloud cover in August
The sky is clear or mostly clear about 74% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 12% of August, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to cloud over as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 90 | 90 | 89 | 89 | 88 | 88 | 88 | 86 | 86 | 86 | 86 | 85 | 85 | 85 | 85 | 84 | 84 | 84 | 83 | 83 | 84 | 84 | 84 | 84 | 83 | 83 | 84 | 84 | 84 | 84 | 84 |
| Cloudier (%) | 10 | 10 | 11 | 11 | 12 | 12 | 12 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 16 | 16 | 16 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 90 | 10 |
| 2 | 90 | 10 |
| 3 | 89 | 11 |
| 4 | 89 | 11 |
| 5 | 88 | 12 |
| 6 | 88 | 12 |
| 7 | 88 | 12 |
| 8 | 86 | 14 |
| 9 | 86 | 14 |
| 10 | 86 | 14 |
| 11 | 86 | 14 |
| 12 | 85 | 15 |
| 13 | 85 | 15 |
| 14 | 85 | 15 |
| 15 | 85 | 15 |
| 16 | 84 | 16 |
| 17 | 84 | 16 |
| 18 | 84 | 16 |
| 19 | 83 | 17 |
| 20 | 83 | 17 |
| 21 | 84 | 16 |
| 22 | 84 | 16 |
| 23 | 84 | 16 |
| 24 | 84 | 16 |
| 25 | 83 | 17 |
| 26 | 83 | 17 |
| 27 | 84 | 16 |
| 28 | 84 | 16 |
| 29 | 84 | 16 |
| 30 | 84 | 16 |
| 31 | 84 | 16 |
Chance of precipitation in August
Tri-Cities gets around 0.2 in of rain over 1 wet days in August. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 3% and peaks near 4% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Rain chance (%) | |
|---|---|
| 1 | 3 |
| 2 | 3 |
| 3 | 3 |
| 4 | 3 |
| 5 | 3 |
| 6 | 3 |
| 7 | 3 |
| 8 | 3 |
| 9 | 3 |
| 10 | 3 |
| 11 | 3 |
| 12 | 3 |
| 13 | 3 |
| 14 | 3 |
| 15 | 3 |
| 16 | 3 |
| 17 | 3 |
| 18 | 4 |
| 19 | 4 |
| 20 | 4 |
| 21 | 4 |
| 22 | 4 |
| 23 | 4 |
| 24 | 4 |
| 25 | 4 |
| 26 | 4 |
| 27 | 4 |
| 28 | 4 |
| 29 | 4 |
| 30 | 4 |
| 31 | 4 |
Humidity in August
Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the dry band about 97% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 96 | 95 | 95 | 95 | 95 | 95 | 95 | 95 | 95 | 95 | 95 | 96 | 96 | 96 | 96 | 96 | 96 | 97 | 97 | 97 | 97 | 98 | 98 | 98 | 98 | 98 | 99 | 99 | 99 | 99 | 99 |
| Comfortable (%) | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 96 | 4 |
| 2 | 95 | 5 |
| 3 | 95 | 5 |
| 4 | 95 | 5 |
| 5 | 95 | 5 |
| 6 | 95 | 5 |
| 7 | 95 | 5 |
| 8 | 95 | 5 |
| 9 | 95 | 5 |
| 10 | 95 | 5 |
| 11 | 95 | 5 |
| 12 | 96 | 4 |
| 13 | 96 | 4 |
| 14 | 96 | 4 |
| 15 | 96 | 4 |
| 16 | 96 | 4 |
| 17 | 96 | 4 |
| 18 | 97 | 3 |
| 19 | 97 | 3 |
| 20 | 97 | 3 |
| 21 | 97 | 3 |
| 22 | 98 | 2 |
| 23 | 98 | 2 |
| 24 | 98 | 2 |
| 25 | 98 | 2 |
| 26 | 98 | 2 |
| 27 | 99 | 1 |
| 28 | 99 | 1 |
| 29 | 99 | 1 |
| 30 | 99 | 1 |
| 31 | 99 | 1 |
Wind in August
Winds average 5 mph in August.
Across August, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 5 | calm |
| 2 | 5 | calm |
| 3 | 5 | calm |
| 4 | 5 | calm |
| 5 | 5 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 5 | calm |
| 24 | 5 | calm |
| 25 | 5 | calm |
| 26 | 5 | calm |
| 27 | 5 | calm |
| 28 | 5 | calm |
| 29 | 5 | calm |
| 30 | 5 | calm |
| 31 | 5 | calm |
Sunrise & sunset in August
Daylight runs from about 14 h 42 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 90 minutes over August. Sunrise moves from 4:42 AM to 5:21 AM, and sunset from 7:23 PM to 6:33 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.7 | 14.6 | 14.6 | 14.6 | 14.5 | 14.5 | 14.4 | 14.4 | 14.3 | 14.3 | 14.2 | 14.2 | 14.1 | 14.1 | 14.0 | 14.0 | 13.9 | 13.9 | 13.8 | 13.8 | 13.7 | 13.7 | 13.6 | 13.6 | 13.5 | 13.5 | 13.4 | 13.4 | 13.3 | 13.3 | 13.2 |
| Sunrise (AM) | 4:42 | 4:44 | 4:45 | 4:46 | 4:47 | 4:48 | 4:50 | 4:51 | 4:52 | 4:53 | 4:55 | 4:56 | 4:57 | 4:59 | 5:00 | 5:01 | 5:02 | 5:04 | 5:05 | 5:06 | 5:08 | 5:09 | 5:10 | 5:11 | 5:13 | 5:14 | 5:15 | 5:17 | 5:18 | 5:19 | 5:21 |
| Sunset (PM) | 7:23 | 7:22 | 7:21 | 7:19 | 7:18 | 7:16 | 7:15 | 7:13 | 7:12 | 7:10 | 7:09 | 7:07 | 7:06 | 7:04 | 7:02 | 7:01 | 6:59 | 6:57 | 6:55 | 6:54 | 6:52 | 6:50 | 6:48 | 6:46 | 6:45 | 6:43 | 6:41 | 6:39 | 6:37 | 6:35 | 6:33 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.7 | 4:42 | 7:23 |
| 2 | 14.6 | 4:44 | 7:22 |
| 3 | 14.6 | 4:45 | 7:21 |
| 4 | 14.6 | 4:46 | 7:19 |
| 5 | 14.5 | 4:47 | 7:18 |
| 6 | 14.5 | 4:48 | 7:16 |
| 7 | 14.4 | 4:50 | 7:15 |
| 8 | 14.4 | 4:51 | 7:13 |
| 9 | 14.3 | 4:52 | 7:12 |
| 10 | 14.3 | 4:53 | 7:10 |
| 11 | 14.2 | 4:55 | 7:09 |
| 12 | 14.2 | 4:56 | 7:07 |
| 13 | 14.1 | 4:57 | 7:06 |
| 14 | 14.1 | 4:59 | 7:04 |
| 15 | 14.0 | 5:00 | 7:02 |
| 16 | 14.0 | 5:01 | 7:01 |
| 17 | 13.9 | 5:02 | 6:59 |
| 18 | 13.9 | 5:04 | 6:57 |
| 19 | 13.8 | 5:05 | 6:55 |
| 20 | 13.8 | 5:06 | 6:54 |
| 21 | 13.7 | 5:08 | 6:52 |
| 22 | 13.7 | 5:09 | 6:50 |
| 23 | 13.6 | 5:10 | 6:48 |
| 24 | 13.6 | 5:11 | 6:46 |
| 25 | 13.5 | 5:13 | 6:45 |
| 26 | 13.5 | 5:14 | 6:43 |
| 27 | 13.4 | 5:15 | 6:41 |
| 28 | 13.4 | 5:17 | 6:39 |
| 29 | 13.3 | 5:18 | 6:37 |
| 30 | 13.3 | 5:19 | 6:35 |
| 31 | 13.2 | 5:21 | 6:33 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 6.77 kWh/m².
For context, solar energy here swings from a low near 1.26 kWh/m² to a high of 7.85 kWh/m² in July across the year — August's 6.77 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.4 | 7.4 | 7.4 | 7.3 | 7.3 | 7.3 | 7.2 | 7.2 | 7.1 | 7.1 | 7.0 | 7.0 | 6.9 | 6.9 | 6.8 | 6.8 | 6.7 | 6.7 | 6.6 | 6.6 | 6.5 | 6.5 | 6.4 | 6.4 | 6.3 | 6.3 | 6.2 | 6.2 | 6.1 | 6.0 | 6.0 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 7.4 | Intense |
| 2 | 7.4 | Intense |
| 3 | 7.4 | Intense |
| 4 | 7.3 | Intense |
| 5 | 7.3 | Intense |
| 6 | 7.3 | Intense |
| 7 | 7.2 | Intense |
| 8 | 7.2 | Intense |
| 9 | 7.1 | Intense |
| 10 | 7.1 | Intense |
| 11 | 7.0 | Intense |
| 12 | 7.0 | Intense |
| 13 | 6.9 | Intense |
| 14 | 6.9 | Intense |
| 15 | 6.8 | Intense |
| 16 | 6.8 | Intense |
| 17 | 6.7 | Intense |
| 18 | 6.7 | Intense |
| 19 | 6.6 | Intense |
| 20 | 6.6 | Intense |
| 21 | 6.5 | Intense |
| 22 | 6.5 | Intense |
| 23 | 6.4 | Intense |
| 24 | 6.4 | Intense |
| 25 | 6.3 | Intense |
| 26 | 6.3 | Intense |
| 27 | 6.2 | Intense |
| 28 | 6.2 | Intense |
| 29 | 6.1 | Intense |
| 30 | 6.0 | Intense |
| 31 | 6.0 | Bright |
Is August a good time to visit Tri-Cities?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is a reasonable time to visit Tri-Cities for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Tri-Cities in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Tri-Cities sees daytime highs around 92°F and nights near 62°F. Pack light clothes and sun protection.
UV index in Tri-Cities in August
Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Tri-Cities peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 7 | 6 | 8 | 6 | 5 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | Very high | High | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | Very high |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Tri-Cities in August
Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.
Air quality in Tri-Cities is worst in August — around 27 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 9 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 10 | 11 | 14 | 11 | 9 | 10 | 13 | 27 | 21 | 12 | 11 | 9 |
| Level | Good | Good | Moderate | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 11 | Good |
| Mar | 14 | Moderate |
| Apr | 11 | Good |
| May | 9 | Good |
| Jun | 10 | Good |
| Jul | 13 | Moderate |
| Aug | 27 | Moderate |
| Sep | 21 | Moderate |
| Oct | 12 | Moderate |
| Nov | 11 | Good |
| Dec | 9 | Good |
Where is Tri-Cities?
Tri-Cities sits at 46.2°N, 119.2°W, 348 ft above sea level, in United States. The nearest listed city is Kennewick, 3.7 mi away.
Topography around Tri-Cities
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Tri-Cities.
Within 2 miles, the terrain around Tri-Cities has only modest variations in elevation — a maximum elevation change of 197 ft around an average of 400 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,677 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,894 ft.
The land around Tri-Cities is covered by artificial surfaces (32%) and grassland (28%) within 2 miles, grassland (38%) and cropland (28%) within 10 miles, and grassland (51%) and cropland (42%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Tri-Cities (46.2454°, -119.1962°, elevation 348 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).