Climate and monthly weather forecastCoralville, IA
Climate and monthly weather forecast
The climate of Coralville
Coralville, a city in Iowa, experiences a humid continental climate, characterized by no dry season and a hot summer according to the Köppen climate classification Dfa. Situated in the Midwestern part of the United States, this region sees significant variations in weather parameters throughout the year, reflective of the seasons' changing patterns.Temperatures in Coralville range throughout the year. The least warm month of the year, January, sees an average low of 15.3°F (-9.3°C) and high of 27.3°F (-2.6°C), while July, the warmest month, sees an average high of 81.5°F (27.5°C) and low of 64.6°F (18.1°C). Rainfall also varies significantly. The wettest month is May with an accumulated precipitation of 4.69" (119mm), while the driest month, February, registers lower with just 1.34" (34mm) of rainfall.
Humidity levels remain relatively high, with the highest relative humidity observed in July at 83%, and the lowest in October at 72%. Monthly sunshine duration ranges from 4.2 hours to 10 hours, the longest being in July, while the shortest durations occur in December and January.
It's worth noting that while Coralville sees a significant amount of snowfall, it occurs mainly from January to March with a peak snowfall of 5.28" (134mm) registered in January. Wind speeds change subtly across the year, but the windiest month is April with an average of 10.7mph (17.2km/h).
The best time to visit Coralville
Considering the climate parameters, the most desirable time to visit Coralville falls between May and September as this period experiences relatively warmer temperatures ranging from 58.6°F (14.8°C) to 81.5°F (27.5°C) accompanied by longer daylight hours. These conditions provide ample opportunities for outdoor activities and exploration of local attractions.The worst time to visit Coralville
In contrast, the months from November to March could be challenging for visitors due to chilly temperatures, shorter daylight hours and a relative increase in snowfall. January experiences the lowest temperatures, with an average low of 15.3°F (-9.3°C).Spring weather in Coralville
Spring in Coralville brings a rise in temperatures and an increase in rainfall. From March to May, temperatures climb from an average low-high range of 31.6°F (-0.2°C)-46.6°F (-43.7°C) to 53.2°F (11.8°C)-69.8°F (-56.6°C) by the end of the season. Alongside this, rainfall also increases, peaking in May with 4.69" (119mm) of precipitation.Summer weather in Coralville
Summers in Coralville, from June to August, bring the year's highest temperatures and longest daylight hours but also a drop in rainfall. Average temperatures hover between 62.1°F (16.7°C) and 81.5°F (27.5°C), and daylight hours range from 14.6 to 15.2 hours per day. Rainfall decreases from 3.9" (99mm) in June to 1.93" (49mm) in August.Autumn weather in Coralville
Autumn, running from September to November, sees a decline in temperatures and a slight increase in rainfall. Average temperatures start around 55.8°F (13.2°C)-75.2°F (-59.6°C) in September and end at 32.5°F (0.3°C)-46.4°F (-43.6°C) in November. October witnesses the lowest relative humidity of the year at 72%.Winter weather in Coralville
Winter in Coralville, from December to February, is marked by the year's lowest temperatures, shorter daylight hours, and increases in snowfall. Average temperatures range from 15.3°F (-9.3°C) in January to 32°F (0°C) in March. December and January record the shortest daylight hours, with averages of 9.2 and 9.6 hours respectively. The peak snowfall occurs in January with 5.28" (134mm) accumulation.Weather in January
January in Coralville, Iowa, greets residents with the chilling embrace of winter. A snowy landscape is a common sight with approximately 5.28" (134mm) of snow typically settling during this month. Cool winds whip through the city at an average of 10.4mph (16.7km/h), providing the perfect setting for indoor activities. Weather in January »Weather in February
By February, Coralville experiences a slight increase in temperature, marking the transition towards the end of winter. The predominant winter features linger, but with lesser snowfall, approximately 4.84" (123mm). Consequently, daylight increases, paving the way for more outdoor activities compared to the previous month. Weather in February »Weather in March
In March, the weather in Coralville begins to transform as the vestiges of winter make way for welcome hints of spring. A notable shift in precipitation is observed, with rainfall taking over snow, tallying up to approximately 2.09" (53mm). Weather in March »Weather in April
April ushers in more pronounced signs of spring in Coralville. In contrast to March, snow becomes a rarity and the city receives an average rainfall of around 3.19" (81mm). Temperature fluctuations become more amiable, rendering the outdoors more welcoming to residents. Weather in April »Weather in May
Throughout May, Coralville becomes notably sunnier and warmer, in stark contrast to the colder months. Rainfall begins to peak, registering a yearly high with about 4.69" (119mm), rejuvenating the flora in the city. The increase in temperature ushers in diverse outdoor activities, highlighting why many residents cherish this time of the year. Weather in May »Weather in June
June in Coralville comes with the comforting warmth of early summer. The noticeable spike in temperatures that started in May plateaus into a comfortable range. This month experiences the longest daylight hours of around 15.2, promising ample time for outdoor pursuits. Weather in June »Weather in July
July is when Coralville basks in the heart of the summer season. The Ultraviolet Index reaches its peak at 6, marking the intensity of the summer sun. Transitioning into August, the weather continues to offer just the right amount of sunlight, perfect for an all-day beach outing. Weather in July »Weather in August
August in Coralville still enjoys the summer warmth but with a slight dip in the mercury levels. Despite the mild drop in temperature, the heat remains substantial enough to characterize the month as predominantly summer. There is a significant shift from the peak rainfall in May to a decreased rate, around 1.93" (49mm). Weather in August »Weather in September
September brings the early onset of fall in Coralville, introducing a multitude of colorful, scenic views. With less rainfall compared to August, around 2.44" (62mm), the weather gradually becomes dryer. Temperatures begin to cool, resulting in comfortable conditions for outdoor activities. Weather in September »Weather in October
In October, Coralville residents witness the full splendor of the fall season. The first hints of winter begin to creep in, resulting in an appealing mix of warm and cool days. The amalgamation of these weather patterns produces striking sceneries across the city. Weather in October »Weather in November
November in Coralville paints a vivid picture of late fall transitioning into the early stages of winter. The city's first snowfall of the season usually appears during this time, leaving around 0.83" (21mm) of snow. The dropping temperatures and shortened daylight hours are clear indications of the imminent winter season. Weather in November »Weather in December
Finally, December in Coralville welcomes winter in full swing. The city is comfortably blanketed with approximately 2.28" (58mm) of snow at this period, signaling that winter is well underway. The clear, cool winter air combined with the festivity of the holiday season makes this time of the year particularly enjoyable. Weather in December »Updated: Jul 30, 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
In Coralville, January records the average lowest temperatures, peaking at 27.3°F (-2.6°C) and reaching a low of 15.3°F (-9.3°C).
The months with the highest humidity are January and July, with an average relative humidity of 83%.
January and February are months with the least rain when the rain falls for 5.7 days and typically aggregates up to 1.34" (34mm) of rain.
In Coralville, during the entire year, the rain falls for 140.4 days and collects up to 29.57" (751mm) of precipitation.
Months with snowfall are January through April, October through December.
January is the month with the most snowfall in Coralville. Snow falls for 10.9 days and accumulates 5.28" (134mm) of snow.
Throughout the year, there are 37.7 snowfall days, and 16.42" (417mm) of snow is accumulated.
January has the least sunshine of the year, with an average of 4.2h of sunshine.
January is the month with the lowest UV index, with an average maximum UV index of 1.
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.
The month with the most rainfall is May, when the rain falls for 18.4 days and typically aggregates up to 4.69" (119mm) of precipitation.
In Coralville, Iowa, snow does not fall in May through September.
The month with the longest days is June, with an average of 15h and 12min of daylight.
The months with the highest UV index are June and July, with an average maximum UV index of 6.
July is the month when Coralville experiences its warmest temperatures, averaging a high of 81.5°F (27.5°C) and a low of 64.6°F (18.1°C).
The month with the most sunshine is July, with an average of 10h of sunshine.
The least humid month is October, with an average relative humidity of 72%.
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Coralville, IA
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.3°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure
Coralville, IA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"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 (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Coralville, IA
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
6.9mph - Average wind speed in August:
6.9mph - Average wind speed in September:
8mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.3mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity
Coralville, IA
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Coralville, IA
- Average rainfall in January:
1.34" - Average rainfall in February:
1.34" - Average rainfall in March:
2.09" - Average rainfall in April:
3.19" - Average rainfall in May:
4.69" - Average rainfall in June:
3.9"
- Average rainfall in July:
3.03" - Average rainfall in August:
1.93" - Average rainfall in September:
2.44" - Average rainfall in October:
2.48" - Average rainfall in November:
1.69" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is May (4.69").
The driest months (with the least rainfall) are January and February (1.34").
Average rainfall days
Coralville, IA
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
5 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
18.4 days - Average rainfall days in June:
17.7 days
- Average rainfall days in July:
15.2 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
12 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
8.3 days - Average rainfall days in December:
7 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5 days).
Average snowfall
Coralville, IA
The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Coralville, IA
- Average snowfall days in January:
10.9 days - Average snowfall days in February:
9.4 days - Average snowfall days in March:
4.9 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0 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:
2.3 days - Average snowfall days in December:
8.4 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Coralville, IA
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- 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 48min - Average daylight in December:
9h and 12min
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 12min - Average sunshine in February:
4h and 18min - Average sunshine in March:
6h and 30min - Average sunshine in April:
7h and 48min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 18min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Coralville, IA
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
15 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
10 days - Average sunshine days in June:
10.1 days
- Average sunshine days in July:
12.2 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
17.9 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
17 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10 days).
Average UV index
Coralville, 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
Coralville, IA
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Coralville, IA
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
