Annual mean 11°C · wettest around December · prevailing wind SW
Warmest
31.3 °C
Coldest
4.1 °C
Wettest
60%
Windiest
4.6 m/s
Prevailing
SW
3.3 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 Dayton over the whole year is 11°C. July is the hottest month, with highs of about 31°C; February is the coldest, with lows of about -3°C. The rainy (wet) season in Dayton runs from August to May, peaking in December with a 62% chance of rain on a given day. The dry season is June to July; July is the driest month, at 37%. Winds in Dayton are highest in April, averaging 3.3 m/s (12 km/h), and lightest in December, at 2.1 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Dayton come in July, when the sky is typically 12% covered; March is the cloudiest month, at 41%.
Month by month Dayton 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
5°C
-3°C
0°C
61%
39%
2.2 m/s
0
0
15
February
7°C
-3°C
2°C
61%
35%
2.8 m/s
1
0
25
March
9°C
-1°C
4°C
61%
41%
3.1 m/s
5
0
33
April
15°C
3°C
9°C
57%
31%
3.3 m/s
23
0
62
May
19°C
7°C
14°C
57%
28%
3.1 m/s
49
5
71
June
26°C
13°C
21°C
48%
15%
3.1 m/s
69
32
53
July
31°C
15°C
27°C
37%
12%
2.8 m/s
55
65
22
August
29°C
13°C
25°C
51%
16%
2.5 m/s
64
61
27
September
24°C
8°C
20°C
54%
19%
2.5 m/s
70
25
60
October
18°C
3°C
13°C
54%
19%
2.2 m/s
45
3
72
November
10°C
-1°C
6°C
58%
28%
2.2 m/s
9
0
43
December
5°C
-3°C
1°C
62%
38%
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 Dayton weather by season
Year round, Dayton has days of about 5°C at their warmest in January, its coolest month, and 31°C in July, its warmest; the coolest hours of the day run from -3°C to 15°C through the year, and the average temperature over the year is 11°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.
Dayton weather in winterDecember to February
High 5°CLow -3°CRain 61%
Winter in Dayton has typical daily highs of about 5°C and lows of about -3°C, with a 61% chance of rain on a given day.
Dayton weather in springMarch to May
High 14°CLow 3°CRain 58%
Spring in Dayton has typical daily highs of about 14°C and lows of about 3°C, with a 58% chance of rain on a given day.
Dayton weather in summerJune to August
High 29°CLow 13°CRain 45%
Summer in Dayton has typical daily highs of about 29°C and lows of about 13°C, with a 45% chance of rain on a given day.
Dayton weather in autumnSeptember to November
High 17°CLow 3°CRain 55%
Autumn in Dayton has typical daily highs of about 17°C and lows of about 3°C, with a 55% chance of rain on a given day.
When is the rainy season in Dayton?
The rainy (wet) season in Dayton runs from August to May, peaking in December with a 62% chance of rain on a given day. The dry season is June to July; July is the driest month, at 37%.
What time of year is Dayton windiest?
Winds in Dayton are highest in April, averaging 3.3 m/s (12 km/h), and lightest in December, at 2.1 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Dayton year round?
The average temperature in Dayton over the whole year is 11°C. July is the hottest month, with highs of about 31°C; February is the coldest, with lows of about -3°C.