Annual mean 7°C · wettest around August · prevailing wind NE
Warmest
25.2 °C
Coldest
-1.9 °C
Wettest
33%
Windiest
3.6 m/s
Prevailing
NE
2.7 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Lanzhou over the whole year is 7°C. July is the hottest month, with highs of about 25°C; January is the coldest, with lows of about -12°C. The rainy (wet) season in Lanzhou runs from April to October, peaking in August with a 31% chance of rain on a given day. The dry season is November to March; December is the driest month, at 2%. Winds in Lanzhou are highest in April, averaging 2.7 m/s (10 km/h), and lightest in December, at 1.9 m/s (7 km/h). The prevailing wind is from the NE. The clearest skies in Lanzhou come in December, when the sky is typically 48% covered; August is the cloudiest month, at 71%.
Month by month Lanzhou 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
-1°C
-12°C
-5°C
6%
55%
2.0 m/s
0
0
0
February
2°C
-9°C
-3°C
16%
59%
2.1 m/s
0
0
6
March
9°C
-1°C
4°C
9%
63%
2.6 m/s
4
0
36
April
15°C
5°C
10°C
17%
67%
2.7 m/s
23
0
64
May
19°C
10°C
15°C
22%
65%
2.7 m/s
55
4
73
June
23°C
14°C
20°C
27%
71%
2.4 m/s
77
17
64
July
25°C
16°C
23°C
29%
64%
2.4 m/s
70
42
40
August
23°C
16°C
22°C
31%
71%
2.3 m/s
69
34
45
September
19°C
11°C
17°C
24%
69%
2.2 m/s
67
5
78
October
12°C
4°C
9°C
17%
68%
2.1 m/s
10
0
65
November
6°C
-4°C
2°C
8%
52%
2.1 m/s
0
0
25
December
0°C
-11°C
-5°C
2%
48%
1.9 m/s
0
0
1
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 Lanzhou weather by season
Year round, Lanzhou has days of about -1°C at their warmest in January, its coolest month, and 25°C in July, its warmest; the coolest hours of the day run from -12°C to 16°C through the year, and the average temperature over the year is 7°C around the clock. Rain is most likely around August and least likely around December. 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.
Lanzhou weather in winterDecember to February
High 1°CLow -11°CRain 8%
Winter in Lanzhou has typical daily highs of about 1°C and lows of about -11°C, with a 8% chance of rain on a given day.
Lanzhou weather in springMarch to May
High 14°CLow 5°CRain 16%
Spring in Lanzhou has typical daily highs of about 14°C and lows of about 5°C, with a 16% chance of rain on a given day.
Lanzhou weather in summerJune to August
High 23°CLow 15°CRain 29%
Summer in Lanzhou has typical daily highs of about 23°C and lows of about 15°C, with a 29% chance of rain on a given day.
Lanzhou weather in autumnSeptember to November
High 12°CLow 3°CRain 16%
Autumn in Lanzhou has typical daily highs of about 12°C and lows of about 3°C, with a 16% chance of rain on a given day.
When is the rainy season in Lanzhou?
The rainy (wet) season in Lanzhou runs from April to October, peaking in August with a 31% chance of rain on a given day. The dry season is November to March; December is the driest month, at 2%.
What time of year is Lanzhou windiest?
Winds in Lanzhou are highest in April, averaging 2.7 m/s (10 km/h), and lightest in December, at 1.9 m/s (7 km/h). The prevailing wind is from the NE.
What is the average temperature in Lanzhou year round?
The average temperature in Lanzhou over the whole year is 7°C. July is the hottest month, with highs of about 25°C; January is the coldest, with lows of about -12°C.