Climate and monthly weather forecastHammer, SD
Climate and monthly weather forecast
Weather in January
January, the same as December, in Hammer, South Dakota, is a freezing cold winter month, with an average temperature fluctuating between 19°F (-7.2°C) and 5.4°F (-14.8°C). January, with its average high-temperature of 19°F (-7.2°C) and an average low-temperature of 5.4°F (-14.8°C), holds the record as the coldest month. Weather in January »Weather in February
The last month of the winter, February, is also a subzero cold month in Hammer, South Dakota, with an average temperature varying between 8.1°F (-13.3°C) and 21.6°F (-5.8°C). Hammer indicates an average high-temperature of a still freezing cold 21.6°F (-5.8°C) in February, showing minor variation from January's 19°F (-7.2°C). Weather in February »Weather in March
March, the first month of the spring in Hammer, is a cold month, with an average temperature ranging between min 23.4°F (-4.8°C) and max 37.8°F (3.2°C). March is characterized by a clear rise in the average high-temperature, escalating from February's subzero cold 21.6°F (-5.8°C) to a cold 37.8°F (3.2°C). Weather in March »Weather in April
April is a cool spring month in Hammer, South Dakota, with an average temperature fluctuating between 51.8°F (11°C) and 35.8°F (2.1°C). The start of April signals an increase in the average high-temperature, moving from a cold 37.8°F (3.2°C) in March to a fresh 51.8°F (11°C). Weather in April »Weather in May
The last month of the spring, May, is a refreshing month in Hammer, South Dakota, with temperature in the range of an average low of 48°F (8.9°C) and an average high of 65.1°F (18.4°C). In Hammer, stepping into May brings a temperature increase, moving up from April's fresh 51.8°F (11°C) to an enjoyable 65.1°F (18.4°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Hammer, South Dakota, with an average temperature fluctuating between 57°F (13.9°C) and 74.8°F (23.8°C). A shift in the average high-temperature is noticeable in June, changing from an enjoyable 65.1°F (18.4°C) in May to a moderately hot 74.8°F (23.8°C). Weather in June »Weather in July
July, like June, in Hammer, South Dakota, is another warm summer month, with an average temperature varying between 81.1°F (27.3°C) and 61.7°F (16.5°C). In Hammer, July records the highest average temperatures, peaking at 81.1°F (27.3°C) and reaching a low of 61.7°F (16.5°C). July's average heat index is calculated to be a hot 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Hammer, is another warm month, with an average temperature varying between 59.7°F (15.4°C) and 80.4°F (26.9°C). As July transitions into August, the average high-temperature rests at a still moderately hot 80.4°F (26.9°C), maintaining a close resemblance to the previous month. Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Hammer, South Dakota, with an average temperature varying between 72°F (22.2°C) and 52°F (11.1°C). September brings a minor shift in the average high-temperature, adjusting from a warm 80.4°F (26.9°C) in August to a pleasant 72°F (22.2°C). Weather in September »Weather in October
October, the same as September, is a cool autumn month in Hammer, South Dakota, with an average temperature varying between 40.1°F (4.5°C) and 54.9°F (12.7°C). Hammer sees a considerable decrease in average high-temperatures during October, falling from a pleasant 72°F (22.2°C) in September to a fresh 54.9°F (12.7°C). Weather in October »Weather in November
The last month of the autumn, November, is another cold month in Hammer, South Dakota, with temperature in the range of an average high of 39.6°F (4.2°C) and an average low of 26.8°F (-2.9°C). The start of November signals a clear decrease in the average high-temperature, falling from a cool 54.9°F (12.7°C) in October to an icy 39.6°F (4.2°C). Weather in November »Weather in December
The first month of the winter, December, is still a freezing cold month in Hammer, South Dakota, with an average temperature ranging between min 12.6°F (-10.8°C) and max 23.5°F (-4.7°C). In Hammer, the average high-temperature in December drops, from a cold 39.6°F (4.2°C) in November, to a subzero cold 23.5°F (-4.7°C). Weather in December »Updated: Aug 1, 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
January is the coldest month, with an average high-temperature of 19°F (-7.2°C) and an average low-temperature of 5.4°F (-14.8°C).
January is the most humid month, with an average relative humidity of 89%.
The month with the least rainfall is January, when the rain falls for 2.2 days and typically collects 0.55" (14mm) of precipitation.
In Hammer, during the entire year, the rain falls for 107.9 days and collects up to 20.63" (524mm) of precipitation.
Months with snowfall are January through May, October through December.
Throughout the year, there are 53.2 snowfall days, and 20.12" (511mm) of snow is accumulated.
With an average of 3.7h of sunshine, January has the least sunshine of the year.
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.
In Hammer, snow does not fall in June through September.
June has the longest days of the year, with an average of 15h and 42min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
In Hammer, July is identified by the average highest temperatures, reaching a peak of 81.1°F (27.3°C) and a low of 61.7°F (16.5°C).
July is the month with the most rainfall. Rain falls for 13.6 days and accumulates 3.27" (83mm) of precipitation.
The month with the most sunshine is July, with an average of 10.8h of sunshine.
The least humid month is September, with an average relative humidity of 65%.
The month with the most snowfall is December, when snow falls for 11.5 days and typically aggregates up to 4.29" (109mm) of snow.
December has the shortest days of the year, with an average of 8h and 42min of daylight.
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Hammer, 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 (19°F).
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure
Hammer, SD
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.17"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
Hammer, SD
- Average wind speed in January:
10.8mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.9mph - Average wind speed in June:
8.9mph
- Average wind speed in July:
8.3mph - Average wind speed in August:
8.3mph - Average wind speed in September:
9.6mph - Average wind speed in October:
10.9mph - Average wind speed in November:
10.7mph - Average wind speed in December:
10.7mph
The windiest months (with the highest average wind speed) are April and October (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).
Average humidity
Hammer, SD
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is September (65%).
Average rainfall
Hammer, SD
- Average rainfall in January:
0.55" - Average rainfall in February:
0.59" - Average rainfall in March:
1.18" - Average rainfall in April:
1.77" - Average rainfall in May:
2.48" - Average rainfall in June:
3.23"
- Average rainfall in July:
3.27" - Average rainfall in August:
2.01" - Average rainfall in September:
1.73" - Average rainfall in October:
2.13" - Average rainfall in November:
0.75" - Average rainfall in December:
0.94"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days
Hammer, SD
- Average rainfall days in January:
2.2 days - Average rainfall days in February:
1.6 days - Average rainfall days in March:
8.1 days - Average rainfall days in April:
11 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
17.6 days
- Average rainfall days in July:
13.6 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
9.9 days - Average rainfall days in October:
8.9 days - Average rainfall days in November:
5 days - Average rainfall days in December:
3.4 days
The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (1.6 days).
Average snowfall
Hammer, SD
- Average snowfall in January:
3.5" - Average snowfall in February:
3.78" - Average snowfall in March:
3.35" - Average snowfall in April:
2.17" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is December (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Hammer, SD
- Average snowfall days in January:
11 days - Average snowfall days in February:
10.3 days - Average snowfall days in March:
8.6 days - Average snowfall days in April:
4.1 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:
1.4 days - Average snowfall days in November:
6 days - Average snowfall days in December:
11.5 days
The month with the highest number of snowfall days is December (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Hammer, SD
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
15h and 0min - Average daylight in June:
15h and 42min
- Average daylight in July:
15h and 18min - Average daylight in August:
14h and 6min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
4h and 12min - Average sunshine in March:
5h and 30min - Average sunshine in April:
7h and 24min - Average sunshine in May:
8h and 48min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Hammer, SD
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
17 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
15.3 days - Average sunshine days in August:
16.2 days - Average sunshine days in September:
17.7 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
17.6 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (10.8 days).
Average UV index
Hammer, SD
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Hammer, SD
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 25).
Average visibility
Hammer, 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).
