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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, in Hartwick, Iowa, is another subzero cold winter month, with an average temperature fluctuating between 27°F (-2.8°C) and 13.6°F (-10.2°C). Hartwick reaches its lowest average temperatures in January, measuring 27°F (-2.8°C) at the peak and 13.6°F (-10.2°C) at the lowest. Weather in January »
Weather in February
February, the last month of the winter in Hartwick, is another freezing cold month, with temperature in the range of an average high of 30.7°F (-0.7°C) and an average low of 17.2°F (-8.2°C). As January transitions into February, the average high-temperature rests at a still freezing cold 30.7°F (-0.7°C), maintaining a close resemblance to the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Hartwick, Iowa, with temperature in the range of an average high of 45.7°F (7.6°C) and an average low of 31.5°F (-0.3°C). The changeover to March signals a significant increase in the average high-temperature, rising from a subzero cold 30.7°F (-0.7°C) in February to a chilly 45.7°F (7.6°C). Weather in March »
Weather in April
April is a moderate spring month in Hartwick, Iowa, with an average temperature fluctuating between 41.5°F (5.3°C) and 58.3°F (14.6°C). With the arrival of April, the average high-temperature transitions from a frosty 45.7°F (7.6°C) in March to a mild 58.3°F (14.6°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Hartwick, Iowa, with an average temperature fluctuating between 69.1°F (20.6°C) and 52.2°F (11.2°C). Hartwick sees a rise in temperature during May, with average high-temperatures transitioning from a moderate 58.3°F (14.6°C) in April to a pleasant 69.1°F (20.6°C). Weather in May »
Weather in June
June, the first month of the summer in Hartwick, is a moderately hot month, with an average temperature ranging between min 62.2°F (16.8°C) and max 78.4°F (25.8°C). The arrival of June sees a shift in the average high-temperature, moving from an agreeable 69.1°F (20.6°C) in May to a warm 78.4°F (25.8°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Hartwick, Iowa, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 64.8°F (18.2°C). Hartwick registers the highest average temperatures during the month of July, with peaks of 81.1°F (27.3°C) and lows of 64.8°F (18.2°C). The heat index value for July is evaluated at a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Hartwick, Iowa, with an average temperature varying between 61.9°F (16.6°C) and 79.7°F (26.5°C). August's weather records an average high-temperature of a still warm 79.7°F (26.5°C), showing little deviation from July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Hartwick, Iowa, with an average temperature varying between 55.4°F (13°C) and 74.7°F (23.7°C). In September, Hartwick notes an average high-temperature of a still moderately hot 74.7°F (23.7°C), hardly different from the preceding month. Weather in September »
Weather in October
October, the same as September, in Hartwick, Iowa, is a moderate autumn month, with an average temperature ranging between min 44.4°F (6.9°C) and max 60.1°F (15.6°C). As Hartwick transitions into October, a noticeable drop in the average high-temperature is observed, falling from a warm 74.7°F (23.7°C) in September to a moderate 60.1°F (15.6°C). Weather in October »
Weather in November
November, the last month of the autumn in Hartwick, is also a frosty month, with an average temperature ranging between max 46.2°F (7.9°C) and min 32.2°F (0.1°C). In November, the average high-temperature goes from a mild 60.1°F (15.6°C) in October to a frosty 46.2°F (7.9°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Hartwick, Iowa, with an average temperature fluctuating between 22.1°F (-5.5°C) and 32.9°F (0.5°C). Hartwick's December weather shows a moderate shift in high-temperatures, falling from November's chilly 46.2°F (7.9°C) to a wintry 32.9°F (0.5°C). Weather in December »
Updated: Feb 12, 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
What part of the year is the coldest in Hartwick?
Hartwick's coldest temperatures are experienced in January, with average high temperatures of 27°F (-2.8°C) and lows of 13.6°F (-10.2°C).
What are the most humid months in Hartwick?
January, February and July, with an average relative humidity of 84%, are most humid months.
What is the driest month in Hartwick?
January is the month with the least rainfall. Rain falls for 5 days and accumulates 1.02" (26mm) of precipitation.
How much does it rain in Hartwick?
Throughout the year, in Hartwick, Iowa, there are 135.6 rainfall days, and 27.48" (698mm) of precipitation is accumulated.
When does it snow in Hartwick?
January through May, October through December are months with snowfall.
When does it snow the most in Hartwick?
January is the month with the most snowfall in Hartwick, Iowa. Snow falls for 9.8 days and accumulates 4.49" (114mm) of snow.
How many days does it snow in Hartwick?
Throughout the year, in Hartwick, there are 35.5 snowfall days, and 13.98" (355mm) of snow is accumulated.
What is the month with the least sunshine in Hartwick?
January has the least sunshine of the year, with an average of 4h of sunshine.
When is the lowest UV index in Hartwick?
The month with the lowest UV index in Hartwick, Iowa, is January, with an average maximum UV index of 1.
When is Daylight Saving Time (DST) in Hartwick?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Hartwick, 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.
What is the rainiest month in Hartwick?
May is the month with the most rainfall. Rain falls for 17.3 days and accumulates 4.21" (107mm) of precipitation.
When it does not snow in Hartwick?
June through September are months without snowfall in Hartwick, Iowa.
When are the longest days in Hartwick?
The month with the longest days is June, with an average of 15h and 12min of daylight.
What are the months with the highest UV index in Hartwick?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What is the hottest time of year in Hartwick?
July is the month when Hartwick sees the average highest temperatures, with a high of 81.1°F (27.3°C) and a low of 64.8°F (18.2°C).
What month has the most sunshine in Hartwick?
July has the most sunshine of the year, with an average of 10.1h of sunshine.
What is the least humid month in Hartwick?
With an average relative humidity of 72%, October is the least humid month in Hartwick, Iowa.
What is the month with the shortest days in Hartwick?
December has the shortest days of the year in Hartwick, with an average of 9h and 12min of daylight.
Average temperature
Hartwick, IA
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27°F).
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure
Hartwick, IA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Hartwick, IA
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7mph - Average wind speed in September:
8.1mph - Average wind speed in October:
9.8mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.2mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity
Hartwick, IA
The months with the highest relative humidity are January, February and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Hartwick, IA
- Average rainfall in January:
1.02" - Average rainfall in February:
1.06" - Average rainfall in March:
1.97" - Average rainfall in April:
2.91" - Average rainfall in May:
4.21" - Average rainfall in June:
3.78"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days
Hartwick, IA
- Average rainfall days in January:
5 days - Average rainfall days in February:
4.6 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
12.2 days - Average rainfall days in September:
11.9 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
8.7 days - Average rainfall days in December:
7.2 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (4.6 days).
Average snowfall
Hartwick, IA
- Average snowfall in January:
4.49" - Average snowfall in February:
3.98" - Average snowfall in March:
1.65" - Average snowfall in April:
0.59" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Hartwick, IA
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.4 days - Average snowfall days in May:
0.2 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:
0.5 days - Average snowfall days in November:
2.7 days - Average snowfall days in December:
7.3 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Hartwick, IA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Hartwick, IA
- Average sunshine days in January:
17.6 days - Average sunshine days in February:
15.1 days - Average sunshine days in March:
15.4 days - Average sunshine days in April:
12.9 days - Average sunshine days in May:
11.9 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
18 days - Average sunshine days in November:
18.2 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is June (10.8 days).
Average UV index
Hartwick, IA
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Hartwick, IA
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility
Hartwick, IA
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).