Climate Insights for Moses Lake

The climate in Moses Lake is temperate. The average annual temperature is 12°C and approximately 279mm of precipitation falls per year. December is the wettest month, receiving around 46mm of rainfall. Moses Lake is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to -2°C. Light snow can occur between January and December.

Moses Lake has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is July, when average highs reach 34°C and the mean temperature sits around 26°C. The coldest month is January, when overnight lows fall to -2°C and the daily average is 0°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Moses Lake is a quite dry location, receiving approximately 279mm of precipitation annually, which averages out to around 23mm per month. The wettest month is December, averaging 46mm of rainfall. January and November also tend to see above-average precipitation. The driest month is July, with just 1mm. That's 44mm less than December, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and December, totalling around 43cm annually. December is the snowiest month with approximately 13cm.

Moses Lake is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months.

It is currently summer in Moses Lake, which began on June 21, 2026. Moses Lake is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 34°C, while the coldest stretch bottoms out in January near -2°C. Autumn is next, beginning on September 23, 2026 (8 days from now).

The best time to visit Moses Lake is during May, June and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 11mm per month. By contrast, July can be uncomfortably hot with highs reaching 34°C, while January is the coldest period with lows dropping to -2°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Moses Lake based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.