Annual mean 10°C · wettest around October · prevailing wind W
Warmest
25.1 °C
Coldest
-2.2 °C
Wettest
15%
Windiest
3.4 m/s
Prevailing
W
2.8 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 Grand Island over the whole year is 10°C. July is the hottest month, with highs of about 25°C; January is the coldest, with lows of about -3°C. Grand Island has no sharply defined rainy season: the chance of rain on a given day runs from 8% in July, the driest month, to 15% in October, the wettest. Winds in Grand Island are highest in January, averaging 2.9 m/s (10 km/h), and lightest in July, at 1.9 m/s (7 km/h). The prevailing wind is from the W. The clearest skies in Grand Island come in July, when the sky is typically 41% covered; January is the cloudiest month, at 78%.
Month by month Grand Island 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
-2°C
-3°C
-8°C
11%
78%
2.9 m/s
0
0
1
February
-0°C
-3°C
-7°C
12%
68%
2.9 m/s
0
0
4
March
3°C
0°C
-3°C
12%
61%
2.7 m/s
1
0
11
April
9°C
5°C
4°C
14%
59%
2.5 m/s
8
0
32
May
16°C
11°C
13°C
11%
50%
2.0 m/s
39
7
65
June
22°C
17°C
20°C
10%
44%
2.1 m/s
70
21
63
July
25°C
20°C
25°C
8%
41%
1.9 m/s
71
48
35
August
24°C
19°C
24°C
9%
44%
1.9 m/s
75
44
40
September
21°C
16°C
19°C
9%
46%
2.0 m/s
69
20
66
October
14°C
11°C
11°C
15%
57%
2.4 m/s
30
2
60
November
7°C
4°C
1°C
13%
65%
2.7 m/s
4
0
20
December
2°C
0°C
-4°C
14%
76%
2.8 m/s
0
0
4
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 Grand Island weather by season
Year round, Grand Island has days of about -2°C at their warmest in January, its coolest month, and 25°C in July, its warmest; the coolest hours of the day run from -3°C to 20°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around October 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.
Grand Island weather in winterDecember to February
High -0°CLow -2°CRain 12%
Winter in Grand Island has typical daily highs of about -0°C and lows of about -2°C, with a 12% chance of rain on a given day.
Grand Island weather in springMarch to May
High 10°CLow 5°CRain 12%
Spring in Grand Island has typical daily highs of about 10°C and lows of about 5°C, with a 12% chance of rain on a given day.
Grand Island weather in summerJune to August
High 24°CLow 19°CRain 9%
Summer in Grand Island has typical daily highs of about 24°C and lows of about 19°C, with a 9% chance of rain on a given day.
Grand Island weather in autumnSeptember to November
High 14°CLow 10°CRain 12%
Autumn in Grand Island has typical daily highs of about 14°C and lows of about 10°C, with a 12% chance of rain on a given day.
When is the rainy season in Grand Island?
Grand Island has no sharply defined rainy season: the chance of rain on a given day runs from 8% in July, the driest month, to 15% in October, the wettest.
What time of year is Grand Island windiest?
Winds in Grand Island are highest in January, averaging 2.9 m/s (10 km/h), and lightest in July, at 1.9 m/s (7 km/h). The prevailing wind is from the W.
What is the average temperature in Grand Island year round?
The average temperature in Grand Island over the whole year is 10°C. July is the hottest month, with highs of about 25°C; January is the coldest, with lows of about -3°C.