+46.2454° · -119.1962° · ELEV 0m
Tri-Cities
United States · Washington
Monthly weather averages for Tri-Cities, United States — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.
№ 01
July → JanuaryClimate Overview
Tri-Cities has a arid climate. The warmest month is July (36°C average high) and the coolest is December (5°C).
№ 02
248 mm / yearRainfall by Month
Tri-Cities sees 248 mm of rain a year. The wettest month is December (38 mm); the driest is July (1 mm).
№ 03
April–JuneBest Time to Visit
April–June
7°C – 31°C · 12.5h sun
The best time to visit Tri-Cities is April–June, when temperatures average 7°C–31°C with 12.5 sunshine hours per day.
№ 04
12 months · °C · mm · hoursMonthly Breakdown
| January | 5.7°C | -1.5°C | 32 mm | 4.8 h | 07:35 | 16:36 |
|---|---|---|---|---|---|---|
| February | 8.2°C | -1.0°C | 29 mm | 7.2 h | 07:00 | 17:22 |
| March | 14.1°C | 2.6°C | 26 mm | 9.1 h | 07:09 | 19:01 |
| April | 19.7°C | 6.7°C | 22 mm | 11.1 h | 06:09 | 19:43 |
| May | 26.2°C | 12.2°C | 18 mm | 12.5 h | 05:23 | 20:22 |
| June | 30.7°C | 16.4°C | 8 mm | 13.8 h | 05:04 | 20:50 |
| July | 35.5°C | 19.8°C | 1 mm | 14.3 h | 05:19 | 20:45 |
| August | 34.6°C | 19.0°C | 5 mm | 13.1 h | 05:55 | 20:06 |
| September | 27.6°C | 13.5°C | 8 mm | 10.9 h | 06:34 | 19:09 |
| October | 19.4°C | 7.9°C | 27 mm | 8.6 h | 07:13 | 18:11 |
| November | 10.2°C | 1.9°C | 34 mm | 6.2 h | 06:58 | 16:24 |
| December | 5.1°C | -1.5°C | 38 mm | 4.7 h | 07:32 | 16:11 |