Kennewick weather by month

Frost and snow-likely months in Kennewick

Nights in Kennewick average 36°F (2°C) or below in 5 months (January, February, March, November and December). January, February and December combine average lows at or below 32°F (0°C) with 0.4 in (10 mm) or more of monthly precipitation, so precipitation then is likely to fall as snow. The coldest month is January with an average low of 23°F (-5°C) and a record low of -2°F (-19°C).

• January: average low 23°F (-5°C), record low -2°F (-19°C), 0.6 in (15 mm) of precipitation — snow-likely
• February: average low 27°F (-3°C), record low 6°F (-15°C), 0.5 in (13 mm) of precipitation — snow-likely
• March: average low 32°F (0°C), record low 13°F (-11°C), 0.6 in (15 mm) of precipitation
• November: average low 35°F (2°C), record low 8°F (-13°C), 1.1 in (29 mm) of precipitation
• December: average low 27°F (-3°C), record low 11°F (-12°C), 0.9 in (22 mm) of precipitation — snow-likely

These records carry temperature and precipitation, not snowfall totals.

Best time to visit Kennewick

The most comfortable time to visit Kennewick is generally May to June and September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rainfall is spread evenly across the months, totalling about 8.3 in (212 mm) a year.

Travellers who prefer heat should aim for July, when highs average 88°F (31°C). October is the month to avoid if rain would spoil your plans — it averages 1.5 in (37 mm), roughly 5× the rainfall of the driest month (July).