Best Time to Visit Kennewick: Month-by-Month Guide

Best months for Kennewick: September, May, June, April.

  • Best months for Kennewick: September, May, June, April.
  • Peak season is July, August, June. Expect higher prices and more visitors (estimated from the climate, not from visitor counts).
  • Shoulder season: March, April, May, September, October. Good weather without the busiest period.
  • Wettest months: December, January, November.
  • The least pleasant month is December (score 5.0).

Year at a glance

6° -2° J 10° 0° F 15° 3° M 21° 7° A 27° 11° M 30° 14° J 35° 18° J 34° 17° A 29° 12° S 20° 7° O 11° 2° N 5° -1° D Rainy days

Weather by month

MonthAvg highAvg lowRainfall Rainy daysHumiditySunshine Score
January 6°C-2°C34 mm 8– – 5.1
February 10°C0°C23 mm 6– – 6.1
March 15°C3°C23 mm 7– – 7.2
April 21°C7°C17 mm 5– – 8.3
May 27°C11°C18 mm 4– – 8.5
June 30°C14°C13 mm 3– – 8.4
July 35°C18°C4 mm 1– – 7.2
August 34°C17°C4 mm 1– – 7.5
September 29°C12°C7 mm 2– – 8.9
October 20°C7°C21 mm 5– – 8.0
November 11°C2°C29 mm 7– – 6.3
December 5°C-1°C35 mm 9– – 5.0

Frequently asked questions

When is the best time to visit Kennewick?

The best months are September, May, June, April.

When is the rainy season in Kennewick?

The wettest months are December, January, November.