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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
Weather in January
January, the same as December, in Royal, Iowa, is another subzero cold winter month, with an average temperature fluctuating between 22.8°F (-5.1°C) and 10.6°F (-11.9°C). January is the coldest month, exhibiting average temperatures of 22.8°F (-5.1°C) at the peak and 10.6°F (-11.9°C) at the base. Weather in January »
Weather in February
February, the last month of the winter in Royal, is another freezing cold month, with temperature in the range of an average low of 13.5°F (-10.3°C) and an average high of 27°F (-2.8°C). As Royal welcomes February, the average high-temperature is noted at a still freezing cold 27°F (-2.8°C), closely aligning with the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a wintry month in Royal, Iowa, with an average temperature fluctuating between 28.2°F (-2.1°C) and 42.4°F (5.8°C). The onset of March marks a clear increase in the average high-temperature, escalating from a freezing cold 27°F (-2.8°C) in February to an icy 42.4°F (5.8°C). Weather in March »
Weather in April
April in Royal, Iowa, is a refreshing spring month, with an average temperature varying between 55.6°F (13.1°C) and 39.7°F (4.3°C). With the onset of April, Royal's weather sees a temperature rise, transitioning from a wintry 42.4°F (5.8°C) in March to a moderate 55.6°F (13.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Royal, Iowa, with an average temperature varying between 67.8°F (19.9°C) and 51.4°F (10.8°C). May's arrival sees a rise in the average high-temperature, jumping from April's moderate 55.6°F (13.1°C) to a comfortable 67.8°F (19.9°C). Weather in May »
Weather in June
June, the first month of the summer in Royal, is a moderately hot month, with an average temperature ranging between max 77.4°F (25.2°C) and min 61.2°F (16.2°C). The arrival of June brings a temperature shift, with the average high-temperature escalating from a refreshing 67.8°F (19.9°C) in May to a warm 77.4°F (25.2°C). Weather in June »
Weather in July
July, like June, in Royal, Iowa, is a moderately hot summer month, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 80.2°F (26.8°C). The month of July, characterized by an average high of 80.2°F (26.8°C) and a low of 63.1°F (17.3°C), is recognized as the warmest. Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Royal, Iowa, with temperature in the range of an average high of 78.3°F (25.7°C) and an average low of 59.5°F (15.3°C). The beginning of August reveals an average high-temperature of a still warm 78.3°F (25.7°C), showing minimal deviation from the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Royal, is still a pleasant month, with an average temperature varying between 72.9°F (22.7°C) and 53.8°F (12.1°C). As August transitions into September, Royal sees a gentle drop in the average high-temperature, transitioning from a warm 78.3°F (25.7°C) to an agreeable 72.9°F (22.7°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Royal, Iowa, with an average temperature varying between 57.2°F (14°C) and 42.1°F (5.6°C). October signals a clear decrease in the average high-temperature, dropping from September's pleasant 72.9°F (22.7°C) to a mild 57.2°F (14°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Royal, Iowa, with an average temperature ranging between min 29.7°F (-1.3°C) and max 43.2°F (6.2°C). The arrival of November corresponds with a shift in temperature, down from a mild 57.2°F (14°C) in October to a frosty 43.2°F (6.2°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Royal, Iowa, with an average temperature ranging between max 27.5°F (-2.5°C) and min 16.9°F (-8.4°C). In December, the meteorological conditions markedly change with the average high-temperature descending from a chilly 43.2°F (6.2°C) in November to a subzero cold 27.5°F (-2.5°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Royal?
The coldest period in Royal tends to be January, when average temperatures fluctuate between a high of 22.8°F (-5.1°C) and a low of 10.6°F (-11.9°C).
What is the most humid month in Royal?
January is the most humid month in Royal, with an average relative humidity of 87%.
What is the driest month in Royal?
The month with the least rainfall is January, when the rain falls for 3.1 days and typically collects 0.43" (11mm) of precipitation.
How many days does it rain in Royal?
Throughout the year, in Royal, there are 112.3 rainfall days, and 15.31" (389mm) of precipitation is accumulated.
When does it snow in Royal?
January through May, October through December are months with snowfall in Royal.
How many days does it snow in Royal?
Throughout the year, in Royal, there are 45.5 snowfall days, and 11.14" (283mm) of snow is accumulated.
What is the month with the least sunshine in Royal?
With an average of 4h of sunshine, January has the least sunshine of the year.
What are the months with the lowest UV index in Royal?
January and February, with an average maximum UV index of 1, are months with the lowest UV index in Royal, Iowa.
What is the snowiest month in Royal?
February is the month with the most snowfall. Snow falls for 9.5 days and accumulates 2.72" (69mm) of snow.
When is Daylight Saving Time (DST) in Royal?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Royal, 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.
What is the rainiest month in Royal?
June is the month with the most rainfall in Royal, Iowa. Rain falls for 15.4 days and accumulates 2.44" (62mm) of precipitation.
When it does not snow in Royal?
In Royal, Iowa, snow does not fall in June through September.
When are the longest days in Royal?
June has the longest days of the year, with an average of 15h and 18min of daylight.
What are the months with the highest UV index in Royal?
June and July, with an average maximum UV index of 6, are months with the highest UV index in Royal.
What is the warmest month in Royal?
In Royal, July is the warmest month, with temperatures averaging a high of 80.2°F (26.8°C) and a low of 63.1°F (17.3°C).
What month has the most sunshine in Royal?
With an average of 10.4h of sunshine, July has the most sunshine of the year in Royal.
What is the least humid month in Royal?
With an average relative humidity of 68%, October is the least humid month in Royal.
What is the month with the shortest days in Royal?
The month with the shortest days is December, with an average of 9h and 6min of daylight.
Average temperature
Royal, IA
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.8°F).
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure
Royal, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"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 (29.87"Hg).
Average wind speed
Royal, IA
- Average wind speed in January:
11.1mph - Average wind speed in February:
11mph - Average wind speed in March:
10.9mph - Average wind speed in April:
11.1mph - Average wind speed in May:
9.7mph - Average wind speed in June:
8.7mph
- Average wind speed in July:
7.6mph - Average wind speed in August:
7.8mph - Average wind speed in September:
9mph - Average wind speed in October:
10.4mph - Average wind speed in November:
10.8mph - Average wind speed in December:
10.7mph
The windiest months (with the highest average wind speed) are January and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity
Royal, IA
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (68%).
Average rainfall
Royal, IA
- Average rainfall in January:
0.43" - Average rainfall in February:
0.55" - Average rainfall in March:
1.02" - Average rainfall in April:
1.61" - Average rainfall in May:
2.13" - Average rainfall in June:
2.44"
- Average rainfall in July:
1.57" - Average rainfall in August:
1.61" - Average rainfall in September:
1.3" - Average rainfall in October:
1.26" - Average rainfall in November:
0.55" - Average rainfall in December:
0.83"
The wettest month (with the highest rainfall) is June (2.44").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days
Royal, IA
- Average rainfall days in January:
3.1 days - Average rainfall days in February:
2.7 days - Average rainfall days in March:
8 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
15.5 days - Average rainfall days in June:
15.4 days
- Average rainfall days in July:
13.3 days - Average rainfall days in August:
12.6 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
9.1 days - Average rainfall days in November:
4.8 days - Average rainfall days in December:
4 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (2.7 days).
Average snowfall
Royal, IA
- Average snowfall in January:
2.2" - Average snowfall in February:
2.72" - Average snowfall in March:
1.81" - Average snowfall in April:
0.79" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Royal, IA
- Average snowfall days in January:
10.8 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
6.7 days - Average snowfall days in April:
2.3 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:
1.5 days - Average snowfall days in November:
4.5 days - Average snowfall days in December:
9.9 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Royal, IA
- Average daylight in January:
9h and 2min - 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 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 4min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Royal, IA
- Average sunshine days in January:
19.1 days - Average sunshine days in February:
17.8 days - Average sunshine days in March:
17.4 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
12.6 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
14.1 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
19.4 days - Average sunshine days in November:
20.1 days - Average sunshine days in December:
19.2 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.8 days).
Average UV index
Royal, IA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover
Royal, IA
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility
Royal, 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).
Royal, Iowa, USA
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