May weather forecast
Bertram, IA

Weather in May

May, the last month of the spring, in Bertram, is an agreeable month, with average temperature ranging between max 68.9°F (20.5°C) and min 52.2°F (11.2°C).

Temperature

In May, the average high-temperature rises, from a mild 57.9°F (14.4°C) in April, to an agreeable 68.9°F (20.5°C). In Bertram, the average low-temperature is 52.2°F (11.2°C).

Humidity

In May, the average relative humidity is 79%.

Rainfall

May is the month with the most rainfall. Rain falls for 19 days and accumulates 5" (127mm) of precipitation.

Snowfall

In Bertram snow does not fall through September.

Daylight

The average length of the day in May is 14.6h.

Sunshine

In May, the average sunshine in Bertram is 8.4h.

UV index

In May, the average daily maximum UV index in Bertram is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in May in Bertram?

The average relative humidity in May in Bertram is 79%.

What is the rainiest month in Bertram?

The month with the most rainfall in Bertram, Iowa, is May when the rain falls for 19 days and typically aggregates up to 5" (127mm) of precipitation.

How much does it rain in Bertram in May?

In May, in Bertram, Iowa, the rain falls for 19 days. Throughout May, 5" (127mm) of precipitation is accumulated.

When it does not snow in Bertram?

In Bertram, Iowa, snow does not fall in May through September.

Does it snow in Bertram in May?

In May, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Bertram have in May?

In May, the average length of the day in Bertram, Iowa, is 14.6h.

How long on average sun shines in May in Bertram?

The average sunshine in May in Bertram, Iowa, is 8.4h.

What is the UV index intensity in May in Bertram?

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in May
Bertram, IA

Average temperature in May - Bertram, IA
  • Average high temperature in May: 68.9°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (26.2°F).

  • Average low temperature in May: 52.2°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).

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Average pressure in May
Bertram, IA

Average pressure in May - Bertram, IA
  • Average pressure in May: 29.94"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in May
Bertram, IA

Average wind speed in May - Bertram, IA
  • Average wind speed in May: 9.1mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

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Average humidity in May
Bertram, IA

Average humidity in May - Bertram, IA
  • Average humidity in May: 79%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in May
Bertram, IA

Average rainfall in May - Bertram, IA
  • Average rainfall in May: 5"

The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is January (1.34").

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Average rainfall days in May
Bertram, IA

Average rainfall days in May - Bertram, IA
  • Average rainfall days in May: 19 days

The month with the highest number of rainy days is May (19 days).
Months with the least rainy days are January and February (5.2 days).

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Average snowfall in May
Bertram, IA

Average snowfall in May - Bertram, IA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (5.79").
Months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Bertram, IA

Average snowfall days in May - Bertram, IA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (12.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Bertram, IA

Average daylight in May / Average sunshine in May - Bertram, IA
  • Average daylight in May: 14.6h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 8.4h

Months with the most sunshine are July and August (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 4h).

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Average sunshine days in May
Bertram, IA

Average sunshine days in May - Bertram, IA
  • Average sunshine days in May: 9.2 days

The month with the most sunshine days is November (17 days).
The month with the least sunshine days is June (8.1 days).

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Average UV index in May
Bertram, IA

Average UV index in May - Bertram, IA
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
Bertram, IA

Average cloud cover in May - Bertram, IA
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 58).
Months with the least cloud cover are August and September (Cloud cover 31).

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Average visibility in May
Bertram, IA

Average visibility in May - Bertram, IA
  • Average visibility in May: 6mi

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).

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