May weather forecast
Rolla, MO

Share

Weather in May

May marks the steady transition from spring to early summer in Rolla. As temperatures continue to rise, more outdoor activities become viable, with parks and picnic spots being filled with activity. Sunshine dominates, with a significant drop in cloud coverage compared to the earlier months. Although rain showers still occur, they rarely disrupt the beautiful, warm days and mild nights that May brings. The weather in May is delightful compared to the rest of the year, with the highest temperature often reaching a warm 76.3°F (24.6°C).

Temperature

The arrival of May in Rolla, Missouri, brings a temperature shift, with the average high-temperature escalating from a comfortable 66.2°F (19°C) in April to a moderately hot 76.3°F (24.6°C). Nighttime temperature lowers to an average of 55.9°F (13.3°C) in May.

Humidity

March and May, with an average relative humidity of 77%, are the most humid months in Rolla.

Rainfall

May is the month with the most rainfall. Rain falls for 17.8 days and accumulates 3.98" (101mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Rolla, the average length of the day in May is 14h and 14min.
On the first day of the month, sunrise is at 6:09 am and sunset at 7:58 pm. On the last day of May, in Rolla, sunrise is at 5:46 am and sunset at 8:23 pm CDT.

Sunshine

In May, the average sunshine in Rolla, Missouri, is 9.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In May, an average UV index of 6 transforms into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
[Resources]

Frequently asked questions

What is the usual temperature for Rolla in May?

The high-temperature in Rolla, Missouri, during May is 76.3°F (24.6°C) and the low-temperature is 55.9°F (13.3°C).

What is the most humid month in Rolla?

March and May, with an average relative humidity of 77%, are most humid months in Rolla.

What is the average humidity in May in Rolla?

In May, the average relative humidity in Rolla is 77%.

What is the wettest month in Rolla?

May is the month with the most rainfall in Rolla, Missouri. Rain falls for 17.8 days and accumulates 3.98" (101mm) of precipitation.

How many days does it rain in May in Rolla?

In May, the rain falls for 17.8 days. Throughout May, 3.98" (101mm) of precipitation is accumulated.

When it does not snow in Rolla?

In Rolla, Missouri, snow does not fall in May through September.

Does it snow in Rolla in May?

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

What is the average length of the day in May in Rolla?

The average day length in May in Rolla, Missouri, is 14h and 14min.

When is the sunrise / sunset in May in Rolla?

In May, on the first day of the month, sunrise is at 6:09 am and sunset at 7:58 pm. On the last day of the month, in Rolla, sunrise is at 5:46 am and sunset at 8:23 pm CDT.

How long on average sun shines in May in Rolla?

In Rolla, the average sunshine duration in May is 9.3h.

When is the highest UV index in Rolla?

The months with the highest UV index in Rolla are May through August, with an average maximum UV index of 6.

What is the UV index intensity in May in Rolla?

In Rolla, Missouri, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Rolla, MO

Average temperature in May - Rolla, MO
  • Average high temperature in May: 76.3°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (39.2°F).

  • Average low temperature in May: 55.9°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).

[Resources]

Average pressure in May
Rolla, MO

Average pressure in May - Rolla, MO
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

[Resources]

Average wind speed in May
Rolla, MO

Average wind speed in May - Rolla, MO
  • Average wind speed in May: 7mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

[Resources]

Average humidity in May
Rolla, MO

Average humidity in May - Rolla, MO
  • Average humidity in May: 77%

The months with the highest relative humidity are March and May (77%).
The month with the lowest relative humidity is October (72%).

[Resources]

Average rainfall in May
Rolla, MO

Average rainfall in May - Rolla, MO
  • Average rainfall in May: 3.98"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is November (1.65").

[Resources]

Average rainfall days in May
Rolla, MO

Average rainfall days in May - Rolla, MO
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is December (7 days).

[Resources]

Average snowfall in May
Rolla, MO

Average snowfall in May - Rolla, MO
  • Average snowfall in May: 0"

The month with the highest snowfall is February (3.46").
The months with the least snowfall are May, June, July, August and September (0").

[Resources]

Average snowfall days in May
Rolla, MO

Average snowfall days in May - Rolla, MO
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in May /
Average sunshine in May
Rolla, MO

Average daylight in May / Average sunshine in May - Rolla, MO
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

[Resources]

Average sunshine days in May
Rolla, MO

Average sunshine days in May - Rolla, MO
  • Average sunshine days in May: 11.4 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.4 days).

[Resources]

Average UV index in May
Rolla, MO

Average UV index in May - Rolla, MO
  • Average UV index in May: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average cloud cover in May
Rolla, MO

Average cloud cover in May - Rolla, MO
  • Average cloud cover in May: 38

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 29).

[Resources]

Average visibility in May
Rolla, MO

Average visibility in May - Rolla, MO
  • Average visibility in May: 5mi

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

[Resources]

Rolla, Missouri, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location