Climate and monthly weather forecastGary, SD
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Gary, South Dakota, with an average temperature ranging between max 20.5°F (-6.4°C) and min 7.2°F (-13.8°C). Temperature records mark January as the coldest month, with highs averaging 20.5°F (-6.4°C) and lows at 7.2°F (-13.8°C). Weather in January »Weather in February
February, the last month of the winter in Gary, is another freezing cold month, with temperature in the range of an average low of 9.9°F (-12.3°C) and an average high of 23.9°F (-4.5°C). As Gary steps into February, the average high-temperature holds at a still subzero cold 23.9°F (-4.5°C), hinting at a minor fluctuation from the prior month. Weather in February »Weather in March
March, the first month of the spring in Gary, is a wintry month, with temperature in the range of an average high of 39°F (3.9°C) and an average low of 24.8°F (-4°C). As Gary transitions into March, the average high-temperature shows a marked escalation, increasing from a freezing cold 23.9°F (-4.5°C) in February to a wintry 39°F (3.9°C). Weather in March »Weather in April
April is a fresh spring month in Gary, South Dakota, with an average temperature fluctuating between 37°F (2.8°C) and 53.2°F (11.8°C). The shift into April is marked by a rise in the average high-temperature, moving from March's icy 39°F (3.9°C) to a fresh 53.2°F (11.8°C). Weather in April »Weather in May
The last month of the spring, May, is an enjoyable month in Gary, South Dakota, with an average temperature ranging between min 48.6°F (9.2°C) and max 66.4°F (19.1°C). The arrival of May sees a shift in the average high-temperature, moving from a cool 53.2°F (11.8°C) in April to a comfortable 66.4°F (19.1°C). Weather in May »Weather in June
June, the first month of the summer in Gary, is a warm month, with temperature in the range of an average high of 75.7°F (24.3°C) and an average low of 58.6°F (14.8°C). June's onset brings a rise in the average high-temperature, moving from a refreshing 66.4°F (19.1°C) in May to a warm 75.7°F (24.3°C). Weather in June »Weather in July
July, like June, in Gary, South Dakota, is another warm summer month, with an average temperature varying between 62.1°F (16.7°C) and 81.1°F (27.3°C). July, noted for its average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 62.1°F (16.7°C), is considered the warmest month. In July, the heat index is estimated at a hot 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Gary, is also a moderately hot month, with an average temperature varying between 80.1°F (26.7°C) and 59.5°F (15.3°C). Gary marks the start of August with an average high-temperature of a still moderately hot 80.1°F (26.7°C), hinting at a slight fluctuation from July's 81.1°F (27.3°C). Weather in August »Weather in September
September, the first month of the autumn in Gary, is also an agreeable month, with an average temperature fluctuating between 52.7°F (11.5°C) and 72.5°F (22.5°C). Gary in September experiences a gentle temperature dip, with average high-temperatures reducing from a warm 80.1°F (26.7°C) in August to an agreeable 72.5°F (22.5°C). Weather in September »Weather in October
October, like September, is another mild autumn month in Gary, South Dakota, with temperature in the range of an average low of 41°F (5°C) and an average high of 56.3°F (13.5°C). As September transitions into October, a clear downswing in temperatures is observed, with average highs retreating from a pleasant 72.5°F (22.5°C) to a refreshing 56.3°F (13.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another cold month in Gary, South Dakota, with temperature in the range of an average low of 28.2°F (-2.1°C) and an average high of 41.4°F (5.2°C). A notable decrease in the average high-temperature is observed during November, falling from a mild 56.3°F (13.5°C) in October to a wintry 41.4°F (5.2°C). Weather in November »Weather in December
December, the first month of the winter in Gary, is still a freezing cold month, with an average temperature ranging between max 25.3°F (-3.7°C) and min 14°F (-10°C). A shift in Gary's weather is noticeable as November turns into December, with the average high temperature decreasing from a cold 41.4°F (5.2°C) to a freezing cold 25.3°F (-3.7°C). Weather in December »Updated: Aug 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Gary experiences its lowest temperatures in January, with an average peak of 20.5°F (-6.4°C) and a low of 7.2°F (-13.8°C).
With an average relative humidity of 89%, January is the most humid month.
January is the month with the least rainfall. Rain falls for 1.7 days and accumulates 0.43" (11mm) of precipitation.
In Gary, during the entire year, the rain falls for 101.9 days and collects up to 14.61" (371mm) of precipitation.
Months with snowfall are January through May, October through December.
Throughout the year, there are 49.9 snowfall days, and 14.02" (356mm) of snow is accumulated.
January has the least sunshine of the year, with an average of 4h of sunshine.
January and November, with an average maximum UV index of 1, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 10.1 days and typically aggregates up to 3.27" (83mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
June through September are months without snowfall.
June has the longest days of the year, with an average of 15h and 30min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
July, on average, is the warmest month in Gary, registering a high temperature of 81.1°F (27.3°C) and a low of 62.1°F (16.7°C).
July is the month with the most rainfall. Rain falls for 13.2 days and accumulates 2.56" (65mm) of precipitation.
The month with the most sunshine is July, with an average of 10.6h of sunshine.
The least humid month in Gary is October, with an average relative humidity of 67%.
December has the shortest days of the year, with an average of 8h and 54min of daylight.
Average temperature
Gary, SD
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.5°F).
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure
Gary, SD
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.12"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
Gary, SD
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.7mph - Average wind speed in June:
8.8mph
- Average wind speed in July:
8mph - Average wind speed in August:
8.1mph - Average wind speed in September:
9.3mph - Average wind speed in October:
10.5mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.5mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity
Gary, SD
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).
Average rainfall
Gary, SD
- Average rainfall in January:
0.43" - Average rainfall in February:
0.47" - Average rainfall in March:
0.75" - Average rainfall in April:
1.34" - Average rainfall in May:
1.89" - Average rainfall in June:
2.01"
- Average rainfall in July:
2.56" - Average rainfall in August:
1.5" - Average rainfall in September:
1.26" - Average rainfall in October:
1.26" - Average rainfall in November:
0.47" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days
Gary, SD
- Average rainfall days in January:
1.7 days - Average rainfall days in February:
1.8 days - Average rainfall days in March:
6.9 days - Average rainfall days in April:
11.1 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
13.2 days - Average rainfall days in August:
11.9 days - Average rainfall days in September:
9.8 days - Average rainfall days in October:
7.6 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
3 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (1.7 days).
Average snowfall
Gary, SD
- Average snowfall in January:
2.72" - Average snowfall in February:
3.27" - Average snowfall in March:
2.28" - Average snowfall in April:
1.34" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Gary, SD
- Average snowfall days in January:
11.3 days - Average snowfall days in February:
10.1 days - Average snowfall days in March:
7.4 days - Average snowfall days in April:
3.3 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
1 days - Average snowfall days in November:
5.6 days - Average snowfall days in December:
10.9 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Gary, SD
- Average daylight in January:
9h and 18min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 30min
- Average daylight in July:
15h and 12min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 36min - Average daylight in December:
8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 42min - Average sunshine in March:
5h and 42min - Average sunshine in April:
7h and 48min - Average sunshine in May:
8h and 54min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 18min - Average sunshine in September:
9h and 6min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Gary, SD
- Average sunshine days in January:
18.8 days - Average sunshine days in February:
17.5 days - Average sunshine days in March:
18 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
14.8 days - Average sunshine days in June:
11.3 days
- Average sunshine days in July:
15.2 days - Average sunshine days in August:
16.6 days - Average sunshine days in September:
17.9 days - Average sunshine days in October:
20.6 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
19.8 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index
Gary, SD
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover
Gary, SD
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility
Gary, SD
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
