May weather forecast
Ammon, ID

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Weather in May

Ammon in May experiences a definitive spring month, showing an overwhelming transformation from the biting cold of the winter months. Vegetation bursts into full bloom under the increasing sunlight, creating a scenic landscape. The frequency of rain that reaches a height of 0.83" (21mm) on average further enriches the thriving greenery. The pleasant climate encourages outdoor pursuits, from picnicking in parks to hiking in the nearby trails. Under the pleasant weather conditions, the city resonates a vibrant spring atmosphere.

Temperature

Ammon in May shows a temperature shift, moving from an average high of a fresh 53.6°F (12°C) in April to a comfortable 64.4°F (18°C). A noteworthy temperature dip to an icy 41.2°F (5.1°C) is observed during the nights of May.

Humidity

In May, the average relative humidity in Ammon is 52%.

Rainfall

The wettest months are May and September, with an average 0.83" (21mm) of rainfall.

Snowfall

Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Ammon aggregates 0.59" (15mm) of snow. Throughout the year, there are 54.4 snowfall days, and 16.89" (429mm) of snow is accumulated.

Daylight

In Ammon, the average length of the day in May is 14h and 43min.
On the first day of May, sunrise is at 6:19 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 9:01 pm MDT.

Sunshine

In May, the average sunshine in Ammon is 10.8h.

UV index

The average daily maximum UV index in May in Ammon, Idaho, is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 4 suggests this advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Ammon?

In May, the average high-temperature and low-temperature in Ammon, Idaho, are 64.4°F (18°C) and 41.2°F (5.1°C) respectively.

What is the average humidity in May in Ammon?

In Ammon, the average relative humidity in May is 52%.

What is the wettest month in Ammon?

The wettest months in Ammon are May and September, with an average 0.83" (21mm) of rainfall.

How many days does it rain in May in Ammon?

In May, in Ammon, Idaho, the rain falls for 10.7 days. Throughout May, 0.83" (21mm) of precipitation is accumulated.

What is the last month it snows in Ammon?

May is the last month it regularly snows in Ammon. During 0.3 snowfall days, in May, Ammon aggregates 0.59" (15mm) of snow.

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

In Ammon, Idaho, the average day length in May is 14h and 43min.

When are sunrise and sunset in May in Ammon?

In May, on the first day of the month, sunrise is at 6:19 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 9:01 pm MDT.

How many hours of sunshine does Ammon have in May?

The average sunshine duration in May is 10.8h.

What is the UV index reading in May in Ammon?

In May, the average daily maximum UV index in Ammon, Idaho, is 4. A UV Index value of 3 to 5 symbolizes a medium health risk 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 May
Ammon, ID

Average temperature in May - Ammon, ID
  • Average high temperature in May: 64.4°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (27.9°F).

  • Average low temperature in May: 41.2°F

The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).

Average pressure in May
Ammon, ID

Average pressure in May - Ammon, ID
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Ammon, ID

Average wind speed in May - Ammon, ID
  • Average wind speed in May: 8.2mph

The windiest month (with the highest average wind speed) is April (9mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).

Average humidity in May
Ammon, ID

Average humidity in May - Ammon, ID
  • Average humidity in May: 52%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (35%).

Average rainfall in May
Ammon, ID

Average rainfall in May - Ammon, ID
  • Average rainfall in May: 0.83"

The wettest months (with the highest rainfall) are May and September (0.83").
The driest month (with the least rainfall) is July (0.35").

Average rainfall days in May
Ammon, ID

Average rainfall days in May - Ammon, ID
  • Average rainfall days in May: 10.7 days

The month with the highest number of rainy days is May (10.7 days).
The month with the least rainy days is January (3.7 days).

Average snowfall in May
Ammon, ID

Average snowfall in May - Ammon, ID
  • Average snowfall in May: 0.59"

The month with the highest snowfall is January (3.86").
The months with the least snowfall are June, July and August (0").

Average snowfall days in May
Ammon, ID

Average snowfall days in May - Ammon, ID
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in May /
Average sunshine in May
Ammon, ID

Average daylight in May / Average sunshine in May - Ammon, ID
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 10h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in May
Ammon, ID

Average sunshine days in May - Ammon, ID
  • Average sunshine days in May: 18.3 days

The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is February (16.2 days).

Average UV index in May
Ammon, ID

Average UV index in May - Ammon, ID
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in May
Ammon, ID

Average cloud cover in May - Ammon, ID
  • Average cloud cover in May: 25

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 11).

Average visibility in May
Ammon, ID

Average visibility in May - Ammon, ID
  • Average visibility in May: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

Ammon, Idaho, USA

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