Climate and monthly weather forecastHamilton, IA
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Hamilton, Iowa, with an average temperature varying between 16.2°F (-8.8°C) and 29.3°F (-1.5°C). In Hamilton, January records the lowest average temperatures, peaking at 29.3°F (-1.5°C) and reaching a low of 16.2°F (-8.8°C). Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Hamilton, Iowa, with temperature in the range of an average high of 33.4°F (0.8°C) and an average low of 19.2°F (-7.1°C). The transition into February shows a subtle variation to an icy 33.4°F (0.8°C) from January's 29.3°F (-1.5°C) in the average high-temperature. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Hamilton, Iowa, with temperature in the range of an average low of 33.1°F (0.6°C) and an average high of 48.2°F (9°C). March's arrival signals a significant increase in average high-temperatures, soaring from February's cold 33.4°F (0.8°C) to a chilly 48.2°F (9°C). Weather in March »Weather in April
April in Hamilton, Iowa, is a mild spring month, with an average temperature varying between 60.3°F (15.7°C) and 42.4°F (5.8°C). In Hamilton, stepping into April brings a temperature increase, moving up from March's chilly 48.2°F (9°C) to a moderate 60.3°F (15.7°C). Weather in April »Weather in May
May, the last month of the spring in Hamilton, is an agreeable month, with an average temperature ranging between max 69.4°F (20.8°C) and min 52.7°F (11.5°C). Noticing a change, the average high-temperature during May moves from April's moderate 60.3°F (15.7°C) to an agreeable 69.4°F (20.8°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Hamilton, Iowa, with an average temperature fluctuating between 63.1°F (17.3°C) and 79.7°F (26.5°C). The shift from May to June sees an increase in the average high-temperature, transitioning from a pleasant 69.4°F (20.8°C) to a moderately hot 79.7°F (26.5°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Hamilton, Iowa, with an average temperature varying between 66°F (18.9°C) and 82.9°F (28.3°C). July, characterized by an average high temperature of 82.9°F (28.3°C) and a low temperature of 66°F (18.9°C), is generally the warmest month. The average heat index in July is computed to be a tropical 91.4°F (33°C). Weather in July »Weather in August
August, the last month of the summer in Hamilton, is another warm month, with an average temperature ranging between min 63.1°F (17.3°C) and max 81.9°F (27.7°C). With August's arrival, Hamilton notes an average high-temperature of a still warm 81.9°F (27.7°C), closely following the trend of the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Hamilton, is still a warm month, with an average temperature fluctuating between 75.7°F (24.3°C) and 56.5°F (13.6°C). As August makes way for September, Hamilton's average high-temperature eases from 81.9°F (27.7°C) to a still warm 75.7°F (24.3°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Hamilton, Iowa, with temperature in the range of an average high of 61.5°F (16.4°C) and an average low of 44.6°F (7°C). The transition into October is accompanied by a temperature decrease, with the average high-temperature shifting from a warm 75.7°F (24.3°C) in September to an enjoyable 61.5°F (16.4°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Hamilton, Iowa, with an average temperature varying between 33.6°F (0.9°C) and 48.2°F (9°C). November comes with a drop in the average high-temperature, falling from October's comfortable 61.5°F (16.4°C) to a chilly 48.2°F (9°C). Weather in November »Weather in December
December, the first month of the winter in Hamilton, is still a cold month, with an average temperature ranging between min 23.7°F (-4.6°C) and max 35.1°F (1.7°C). In Hamilton, the average high-temperature in December decreases from a chilly 48.2°F (9°C) in November to a wintry 35.1°F (1.7°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
January, characterized by an average high temperature of 29.3°F (-1.5°C) and a low temperature of 16.2°F (-8.8°C), is generally the coldest month.
In Hamilton, Iowa, during the entire year, the rain falls for 119 days and collects up to 19.02" (483mm) of precipitation.
Months with snowfall are January through May, October through December.
January is the month with the most snowfall in Hamilton, Iowa. Snow falls for 8.2 days and accumulates 2.87" (73mm) of snow.
Throughout the year, in Hamilton, there are 28.3 snowfall days, and 10.28" (261mm) of snow is accumulated.
January has the least sunshine of the year in Hamilton, with an average of 4.1h of sunshine.
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Hamilton, Iowa, 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.
With an average relative humidity of 83%, June is the most humid month.
The month with the most rainfall in Hamilton is June, when the rain falls for 15.1 days and typically aggregates up to 2.99" (76mm) of precipitation.
In Hamilton, Iowa, snow does not fall in June through September.
June has the longest days of the year in Hamilton, Iowa, with an average of 15h and 6min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
The month of July sees the average highest temperatures, reaching 82.9°F (28.3°C) at the peak and 66°F (18.9°C) at the low.
With an average of 10.3h of sunshine, July has the most sunshine of the year in Hamilton.
The least humid month in Hamilton, Iowa, is October, with an average relative humidity of 72%.
The month with the least rainfall in Hamilton is December, when the rain falls for 5.3 days and typically collects 0.63" (16mm) of precipitation.
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Hamilton, IA
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (29.3°F).
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure
Hamilton, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.93"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:
30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Hamilton, 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:
10.5mph - Average wind speed in May:
8.8mph - Average wind speed in June:
8mph
- Average wind speed in July:
7mph - Average wind speed in August:
7mph - Average wind speed in September:
8mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity
Hamilton, IA
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Hamilton, IA
- Average rainfall in January:
0.67" - Average rainfall in February:
0.75" - Average rainfall in March:
1.46" - Average rainfall in April:
1.77" - Average rainfall in May:
2.68" - Average rainfall in June:
2.99"
- Average rainfall in July:
1.85" - Average rainfall in August:
1.97" - Average rainfall in September:
2.05" - Average rainfall in October:
1.26" - Average rainfall in November:
0.94" - Average rainfall in December:
0.63"
The wettest month (with the highest rainfall) is June (2.99").
The driest month (with the least rainfall) is December (0.63").
Average rainfall days
Hamilton, IA
- Average rainfall days in January:
4 days - Average rainfall days in February:
4.2 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
12 days - Average rainfall days in May:
16 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
12.6 days - Average rainfall days in September:
10.9 days - Average rainfall days in October:
8.9 days - Average rainfall days in November:
5.7 days - Average rainfall days in December:
5.3 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is January (4 days).
Average snowfall
Hamilton, IA
- Average snowfall in January:
2.87" - Average snowfall in February:
2.52" - Average snowfall in March:
1.38" - Average snowfall in April:
1.38" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (2.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Hamilton, IA
- Average snowfall days in January:
8.2 days - Average snowfall days in February:
7.2 days - Average snowfall days in March:
4.6 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0.1 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:
1.3 days - Average snowfall days in December:
5.6 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Hamilton, IA
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 6min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
9h and 48min - Average sunshine in September:
9h and 18min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Hamilton, IA
- Average sunshine days in January:
19.5 days - Average sunshine days in February:
17.9 days - Average sunshine days in March:
16.2 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
13.6 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
17 days - Average sunshine days in October:
20.2 days - Average sunshine days in November:
21.9 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is November (21.9 days).
The month with the least sunshine days is June (11.1 days).
Average UV index
Hamilton, IA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Hamilton, IA
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility
Hamilton, IA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
