Annual mean 13°C · wettest around December · prevailing wind NW
Warmest
29.5 °C
Coldest
3.7 °C
Wettest
15%
Windiest
5.7 m/s
Prevailing
NW
3.7 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in The Dalles over the whole year is 13°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 2°C. The Dalles has no sharply defined rainy season: the chance of rain on a given day runs from 2% in July, the driest month, to 16% in December, the wettest. Winds in The Dalles are highest in July, averaging 4.6 m/s (17 km/h), and lightest in January, at 2.0 m/s (7 km/h). The prevailing wind is from the NW. The clearest skies in The Dalles come in July, when the sky is typically 10% covered; December is the cloudiest month, at 74%.
Month by month The Dalles climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
4°C
2°C
1°C
16%
70%
2.0 m/s
0
0
17
February
7°C
2°C
2°C
13%
58%
2.6 m/s
1
0
25
March
11°C
4°C
7°C
11%
48%
2.9 m/s
6
0
53
April
15°C
7°C
11°C
10%
37%
3.7 m/s
24
1
75
May
21°C
12°C
16°C
7%
31%
4.0 m/s
55
12
75
June
24°C
15°C
20°C
6%
23%
4.4 m/s
67
23
64
July
29°C
18°C
24°C
2%
10%
4.6 m/s
68
44
41
August
29°C
17°C
25°C
2%
14%
3.9 m/s
63
49
37
September
23°C
13°C
20°C
6%
27%
3.0 m/s
80
23
67
October
16°C
8°C
13°C
11%
36%
2.3 m/s
40
3
83
November
9°C
4°C
6°C
14%
57%
2.1 m/s
5
0
47
December
5°C
2°C
1°C
16%
74%
2.1 m/s
0
0
15
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short The Dalles weather by season
Year round, The Dalles has days of about 4°C at their warmest in January, its coolest month, and 29°C in July, its warmest; the coolest hours of the day run from 2°C to 18°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around December and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
The Dalles weather in winterDecember to February
High 5°CLow 2°CRain 15%
Winter in The Dalles has typical daily highs of about 5°C and lows of about 2°C, with a 15% chance of rain on a given day.
The Dalles weather in springMarch to May
High 16°CLow 7°CRain 9%
Spring in The Dalles has typical daily highs of about 16°C and lows of about 7°C, with a 9% chance of rain on a given day.
The Dalles weather in summerJune to August
High 27°CLow 17°CRain 3%
Summer in The Dalles has typical daily highs of about 27°C and lows of about 17°C, with a 3% chance of rain on a given day.
The Dalles weather in autumnSeptember to November
High 16°CLow 8°CRain 10%
Autumn in The Dalles has typical daily highs of about 16°C and lows of about 8°C, with a 10% chance of rain on a given day.
When is the rainy season in The Dalles?
The Dalles has no sharply defined rainy season: the chance of rain on a given day runs from 2% in July, the driest month, to 16% in December, the wettest.
What time of year is The Dalles windiest?
Winds in The Dalles are highest in July, averaging 4.6 m/s (17 km/h), and lightest in January, at 2.0 m/s (7 km/h). The prevailing wind is from the NW.
What is the average temperature in The Dalles year round?
The average temperature in The Dalles over the whole year is 13°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 2°C.