The Dalles

Planning a trip to The Dalles? To ensure nothing disrupts your plans, check out the latest weather reports, detailed charts, and weather forecasts provided below.

The climate in The Dalles is characterized by distinct seasonality, offering travelers a variety of weather conditions depending on the time of year. Generally, the weather here can be described as temperate with semi-arid traits: you can expect hot, sunny summers and cool, rather damp winters. This location is perfect for those who prefer a clear change of seasons without extreme freezing temperatures.

The summer period, especially July and August, is a real treat for warmth seekers: average maximum temperatures often exceed 30°C, and precipitation during this time is very rare. The number of rainy days in summer is kept to a minimum (sometimes just one day per month), providing ideal conditions for walking and outdoor activities. September continues to delight with comfortable warmth, smoothly transitioning into a fresher autumn.

Winter months in this part of the USA bring cool temperatures and overcast skies. Although average temperatures rarely drop significantly below freezing (usually hovering around 2°C), the number of days with precipitation increases noticeably, peaking in December and January. Spring arrives gradually, with a steady rise in temperatures and a decrease in rainy days, making May one of the most pleasant months for a visit.

The climate in The Dalles is characterized by distinct seasonality, offering travelers a wide range of weather conditions throughout the year. The coldest period is traditionally the winter months—December, January, and February. During this time, the average air temperature stays around 2.0–2.5°C. Winters here can be called moderately cool: although night temperatures often drop slightly below freezing (to -1°C), severe frosts are rare, allowing for comfortable sightseeing provided you have warm clothing.

Summer, on the other hand, brings significant warming, peaking in July and August. These are the hottest months, with average figures around 22°C and daytime highs regularly exceeding 30°C. Summer weather is conducive to long walks, though one should be prepared for bright sun and high temperatures during midday hours.

An important feature of the temperature regime in The Dalles is the noticeable diurnal (daily) fluctuations, especially in the summer. The difference between daytime heat and nighttime cool can be quite substantial: for example, in July, after a 30-degree heatwave, the night may bring freshness with temperatures around 13–14°C. Travelers are advised to take this factor into account and bring a light jacket or sweater for evening strolls even in the height of summer.

The nature of precipitation in The Dalles has a pronounced seasonality. The winter months and late autumn are the periods of highest humidity. The peak of unsettled weather usually falls in January and December, when up to 18–19 days of precipitation are recorded. Given that temperatures at this time fluctuate around freezing, travelers should be prepared for frequent rain, fog, or sleet. At the same time, the total volume of precipitation in millimeters remains small, suggesting prolonged drizzle rather than heavy downpours.

Spring brings a gradual improvement in the weather: the number of rainy days steadily decreases from 14 in March to 8 in May. A reverse trend is observed in autumn: September and October remain quite comfortable and dry, but by November, the frequency of precipitation increases sharply, signaling the approach of winter.

Summer in The Dalles is a time when you will hardly need an umbrella. July and August are the driest months of the year: statistics show an almost complete lack of precipitation and only about one rainy day per month. This makes summer an ideal time for planning excursions and active outdoor recreation without the fear of getting wet.

Packing for a trip to The Dalles requires careful consideration of the season, as the climate ranges from cool, damp winters to hot, dry summers. During the winter months and early spring, when temperatures often hover near freezing and rainy days are at their peak (especially in January), you will definitely need a warm waterproof jacket, a scarf, and gloves. Don't forget reliable waterproof footwear and a compact umbrella, as rain and sleet are common during this time.

In contrast, the summer period is characterized by high temperatures reaching 30°C and an almost total absence of rain in July and August. For a comfortable trip at this time of year, choose light clothing made from natural breathable fabrics like cotton or linen. Be sure to pack sunglasses, a hat, and SPF sunscreen to protect yourself from the strong sun during your walks.

For the shoulder seasons, such as April or October, the layering principle is the ideal solution. The weather can be changeable: a cool morning can quickly turn into a warm day. A combination of a T-shirt, a light sweater, and a windbreaker will allow you to easily adapt to temperature changes throughout the day. And, of course, regardless of the season, bring a comfortable pair of shoes for long walks around the city and its surroundings.