March weather forecast
Castle Grove, IA

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Weather in March

March, the first month of the spring in Castle Grove, is a frosty month, with an average temperature varying between 29.5°F (-1.4°C) and 44.2°F (6.8°C).

Temperature

March's onset is marked by a clear temperature increase, soaring from a freezing cold 28.9°F (-1.7°C) in February to a frosty 44.2°F (6.8°C). Throughout March nights, Castle Grove experiences a consistent temperature average of 29.5°F (-1.4°C).

Humidity

In March, the average relative humidity is 78%.

Rainfall

In Castle Grove, in March, it is raining for 11.9 days, with typically 1.85" (47mm) of accumulated precipitation. In Castle Grove, during the entire year, the rain falls for 142.5 days and collects up to 28.27" (718mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Castle Grove. In Castle Grove, during March, snow falls for 6 days and regularly aggregates up to 1.85" (47mm) of snow. Throughout the year, there are 43.2 snowfall days, and 17.17" (436mm) of snow is accumulated.

Daylight

In Castle Grove, the average length of the day in March is 11h and 58min.
On the first day of March, sunrise is at 6:39 am and sunset at 5:55 pm CST. On the last day of the month, sunrise is at 6:47 am and sunset at 7:30 pm CDT.
Note: 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 lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.

Sunshine

In March, the average sunshine is 6.3h.

UV index

The average daily maximum UV index in March is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 3 in March suggests the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.

Frequently asked questions

How cold is March?

The average high-temperature, in March, in Castle Grove, is 44.2°F (6.8°C), while the average low-temperature is 29.5°F (-1.4°C).

What is the average humidity in March?

The average relative humidity in March is 78%.

How much does it rain in March?

In March, the rain falls for 11.9 days. Throughout March, 1.85" (47mm) of precipitation is accumulated.

How much does it snow in Castle Grove in March?

In March, it is snowing for 6 days. Throughout March, 1.85" (47mm) of snow is accumulated.

How many hours of daylight does Castle Grove have in March?

In March, the average day length is 11h and 58min.

When are sunrise and sunset in March?

On the first day of March, sunrise is at 6:39 am and sunset at 5:55 pm CST. On the last day of the month, sunrise is at 6:47 am and sunset at 7:30 pm CDT.

When does Daylight Saving Time (DST) start in March?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Castle Grove, and the time zone changes from CST to CDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March?

In Castle Grove, the average sunshine duration in March is 6.3h.

What is the UV index reading in March?

The average daily maximum UV index in March is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Castle Grove, IA

Average temperature in March - Castle Grove, IA
  • Average high temperature in March: 44.2°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in March: 29.5°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).

Average pressure in March
Castle Grove, IA

Average pressure in March - Castle Grove, IA
  • Average pressure in March: 30.08"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in March
Castle Grove, IA

Average wind speed in March - Castle Grove, IA
  • Average wind speed in March: 10.4mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

Average humidity in March
Castle Grove, IA

Average humidity in March - Castle Grove, IA
  • Average humidity in March: 78%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).

Average rainfall in March
Castle Grove, IA

Average rainfall in March - Castle Grove, IA
  • Average rainfall in March: 1.85"

The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").

Average rainfall days in March
Castle Grove, IA

Average rainfall days in March - Castle Grove, IA
  • Average rainfall days in March: 11.9 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).

Average snowfall in March
Castle Grove, IA

Average snowfall in March - Castle Grove, IA
  • Average snowfall in March: 1.85"

The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in March
Castle Grove, IA

Average snowfall days in March - Castle Grove, IA
  • Average snowfall days in March: 6 days

The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in March /
Average sunshine in March
Castle Grove, IA

Average daylight in March / Average sunshine in March - Castle Grove, IA
  • Average daylight in March: 12h and 0min

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 March: 6h and 2min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in March
Castle Grove, IA

Average sunshine days in March - Castle Grove, IA
  • Average sunshine days in March: 14.3 days

The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).

Average UV index in March
Castle Grove, IA

Average UV index in March - Castle Grove, IA
  • Average UV index in March: 3

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in March
Castle Grove, IA

Average cloud cover in March - Castle Grove, IA
  • Average cloud cover in March: 50

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in March
Castle Grove, IA

Average visibility in March - Castle Grove, IA
  • Average visibility in March: 6mi

The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).

Castle Grove, Iowa, USA

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