Climate and monthly weather forecast
Afton, WY

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The climate of Afton

Afton, a small town nestled in Wyoming, USA, belongs to the Subarctic climate category as per the Köppen climate classification. This Dfc climate zone recognizes regions experiencing severely cold winters, cool summers, and lacking a dry season. A yearly glance at Afton's weather reveals its distinct features. The relative humidity fluctuates between 45% in August to 93% in February, whereas daylight hours waver from the shortest of 9.1 hours in December to the longest span of 15.3 hours in June.

Maximum temperatures in Afton span the range from 24.1°F (-4.4°C) in December to 75.9°F (24.4°C) in July, with minimum temperatures varying from 5.4°F (-14.8°C) in January to 45.7°F (7.6°C) in July. Rainfall patterns reveal minor deviations throughout the year, peaking at 2.72" (69mm) in February and dropping to 0.63" (16mm) in July and August. On the other hand, snowfall shows more pronounced shifts, with December presenting 15.51" (394mm) and July offering no snow. These figures underscore the climatic diversity throughout Afton.

A defining trait of Afton's weather involves the distinct transition periods. While the year's maximum wind speed of 6.6mph (10.6km/h) is reached in June, the minimum of 4.2mph (6.8km/h) is seen in January and December. Also, the town experiences varying degrees of cloud coverage, oscillating between 12% in July and August to 63% in February. Interestingly, the UV Index remains at its zenith of 5 only in July, while the lows of 1 are maintained from November through to March.

The best time to visit Afton

Given the weather variability throughout the year, the best time to visit Afton is highly dependent on an individual's preference for temperature, sunlight, and precipitation conditions. According to the weather records, July offers the warmest temperatures, smallest cloud cover, and least amount of precipitation, making it a suitable period for outdoor engagements.

The worst time to visit Afton

In sharp contrast, December presents the coldest temperatures and highest snowfall, reaching up to 15.51" (394mm), alongside decreased daylight hours, implying reduced visibility, these factors culminate in a less than ideal time for visiting this locale.

Spring weather in Afton

March initiates the arrival of spring in Afton, characterized by increasing temperatures from 32.7°F (0.4°C) to 53.8°F (12.1°C) by May, and a similar trend in minimum temperatures from 15.1°F (-9.4°C) to 30.7°F (-0.7°C). Rainfall escalates from 2.13" (54mm) in March to 2.56" (65mm) in May. Concurrently, the town experiences an increase in daylight hours from 12 hours in March to 14.7 hours by May end.

Summer weather in Afton

June ushers in the warmest quarter of the year, with temperatures peaking around 75.9°F (24.4°C) in July and slowly descending to 65.7°F (18.7°C) by the end of August. Daylight hours peak at 15 hours in June, giving ample sunlight for outdoor activities. Rainfall drastically reduces, reaching a point of 0.63" (16mm) in July and August.

Autumn weather in Afton

Autumn in Afton, spanning September to November, sees a gradual fall in temperatures. From the 65.7°F (18.7°C) high in September, the temperature decreases to a cool 34.7°F (1.5°C) by November. Rainfall shows a slight increment during this period, reaching up to 1.61" (41mm) in November.

Winter weather in Afton

The winter season in Afton commences in December, with temperatures plunging to their lowest of 24.1°F (-4.4°C), and with the coldest month being January. The region experiences significant snowfall at this time, with December registering 15.51" (394mm). Visibility decreases, and daylight hours shrink to the lowest of 9.1 hours during December, making it the darkest month of the year.

Weather in January

January in Afton, Wyoming, witnesses a blustering mix of predominant snow and chilling temperatures. The contiguous cold, marked by minimum temperatures reaching 5.4°F (-14.8°C), often blankets the city with a hefty 19.06" (484mm) of snowfall over the span of almost 20 days. Weather in January »

Weather in February

Akin to its predecessor, February in Afton continues the frigid demeanor with heavier snowfall registering at 19.96" (507mm). The low-temperature range marginally shifts upwards, owing to a slight increase in daylight hours. The city, however, reaches only a tad above the freezing point even during the warmest parts of the day. Weather in February »

Weather in March

March sees a welcome retreat from the harsh winter as Afton begins to transition into spring. The snowfall decreases to 15.2" (386mm) and temperatures show a slight rise, however, brisk winds continue to add a sting to the air. The increased daylight of 12 hours introduces a subtle warmth into the days but the nights stay cold and frosty. Weather in March »

Weather in April

April transfuses a warmer breath into Afton's weather, halving the snowfall to 12.52" (318mm) and aiding a gradual rise in temperature. The significant leap in daylight hours to 13.4 ensures the thaw amplifies, hinting at an impending spring. Weather in April »

Weather in May

May marks the definitive start of spring in Afton, with the snowfall dropping significantly to 4.65" (118mm) and temperatures reaching warmer thresholds. As the ground begins to thaw considerably, dapples of green start breaking the monochrome winterscape. Weather in May »

Weather in June

June swings open the doors to summer in Afton. The snowfall finally tapers off to 0.71 inch, signaling the departure of the last vestiges of winter. It is also the first month when temperatures consistently stay above the freezing point. Weather in June »

Weather in July

July is the month of summer in full bloom in Afton, devoid of any snow and featuring an average high temperature of 75.9°F (24.4°C). The increased warmth keeps the ambience exhilarating, as the city basks under the longest hours of daylight. Weather in July »

Weather in August

August persists with the warmth of July, offering an equally temperate and enticing summer experience in Afton. There is no snow whatsoever and the temperature highs hover close to those seen in July. The crickets' chorus fills the luminous nights and days remain filled with summer activities. Weather in August »

Weather in September

September witnesses a shift in narrative as Afton begins its transition from summer to fall. This month marks the first appearance of snow after the summer respite, albeit at a minimal 1.3" (33mm). The temperatures begin to fall as the daylight hours reduce, signaling the onset of autumn. Weather in September »

Weather in October

October in Afton ushers in the full glory of autumn with a noticeable drop in temperatures and a revival of snowfall at 6.3" (160mm). The kaleidoscope of fall colors, twirling leaves, and the beginning of a fresher nip in the air make this month visually arresting. Weather in October »

Weather in November

November in Afton is the prequel to winter, with temperatures falling noticeably, and snowfall inching up to 11.46" (291mm). The landscapes start getting covered in snow, concluding the short-lived riotous spectacle of fall colors. Weather in November »

Weather in December

December rings in winter in Afton with the mercury dipping to its lowest and snowfall amassing to 15.51" (394mm). The city gets a white makeover and dives into the spirit of the Holiday season. Events associated with Christmas bring a festive ambiance all around. Weather in December »
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How much does it rain?

In Afton, during the entire year, the rain falls for 109.5 days and collects up to 21.61" (549mm) of precipitation.

When does it snow?

January through June, September through December are months with snowfall.

How much does it snow?

In Afton, during the entire year, snow falls for 126.9 days and aggregates up to 106.65" (2709mm) of snow.

When is the lowest UV index?

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1.

What is the most humid month?

The most humid month in Afton is February, with an average relative humidity of 93%.

What is the rainiest month?

February is the month with the most rainfall. Rain falls for 5.9 days and accumulates 2.72" (69mm) of precipitation.

What is the snowiest month?

February is the month with the most snowfall. Snow falls for 21.4 days and accumulates 19.96" (507mm) of snow.

What is the month with the least sunshine?

February has the least sunshine of the year, with an average of 4.2h of sunshine.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.

When are the longest days?

With an average of 15h and 18min of daylight, June has the longest days of the year.

What time of the year is the hottest?

Afton's warmest weather arrives in July, when temperatures average a high of 75.9°F (24.4°C) and a low of 45.7°F (7.6°C).

What is the driest month?

The months with the least rainfall are July and August Rain falls for 7.6 days and accumulates 0.63" (16mm) of rain.

When it does not snow?

July and August are months without snowfall.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 11.9h of sunshine.

When is the highest UV index?

July is the month with the highest UV index, with an average maximum UV index of 5.

What is the least humid month?

The least humid month is August, with an average relative humidity of 45%.

What month is the coldest?

Afton's temperature records reveal December as the coldest month, marked by average highs of 24.1°F (-4.4°C) and lows of 6.6°F (-14.1°C).

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 6min of daylight.

Average temperature
Afton, WY

Average temperature - Afton, WY

The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is December (24.1°F).

The month with the highest average low temperature is July (45.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).

Average pressure
Afton, WY

Average pressure - Afton, WY

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Afton, WY

Average wind speed - Afton, WY

The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest months (with the lowest average wind speed) are January and December (4.2mph).

Average humidity
Afton, WY

Average humidity - Afton, WY

The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is August (45%).

Average rainfall
Afton, WY

Average rainfall - Afton, WY

The wettest month (with the highest rainfall) is February (2.72").
The driest months (with the least rainfall) are July and August (0.63").

Average rainfall days
Afton, WY

Average rainfall days - Afton, WY

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.7 days).

Average snowfall
Afton, WY

Average snowfall - Afton, WY

The month with the highest snowfall is February (19.96").
The months with the least snowfall are July and August (0").

Average snowfall days
Afton, WY

Average snowfall days - Afton, WY

The month with the highest number of snowfall days is December (21.7 days).
The months with the least snowfall days are July and August (0 days).

Average daylight / Average sunshine
Afton, WY

Average daylight / Average sunshine - Afton, WY

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).

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

Average sunshine days
Afton, WY

Average sunshine days - Afton, WY

The month with the most sunshine days is July (18.8 days).
The month with the least sunshine days is April (7 days).

Average UV index
Afton, WY

Average UV index - Afton, WY

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).

Average visibility
Afton, WY

Average visibility - Afton, WY

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).

Afton, Wyoming, USA

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