Climate and monthly weather forecastDelta, UT
Climate and monthly weather forecast
The climate of Delta
Delta, Utah, sits in the climate zone known as the mid-latitude steppe, as classified by the Köppen Climate Classification. This location dominates the arid, desert conditions with cold, moderately wet winters, and hot, dry summers, typical for a BSk climate. The climatological data presented displays a broad variation in temperatures, rainfall, and sunlight periods throughout the year.Due to its geographical positioning, Delta exhibits a broad difference between its highest and lowest temperatures through the year. The city experiences summer high temperatures in the region of 91.8°F (33.2°C), while the cold of winter sees temperatures drop to an average low of 22.8°F (-5.1°C). The fluctuation in the temperatures extends to not just the seasons, but one can see a significant daily variation as well.
Rainfall in Delta is sporadic, with rainfall measured at 0.91" (23mm) in March and dipping to 0.24" (6mm) in June. Correspondingly, the number of rainfall days sees a similar pattern with a high of 10 days in April and a low of 3.9 days in June. Notably, Delta receives some amount of snow from December to March, with the maximum snowfall recorded at 3.98" (101mm) in December. The months from April to November are snow-free, marking a distinct dry period.
In terms of daylight, Delta enjoys the maximum amount of daylight during June with approximately 14.9 hours, while December only experiences 9.4 hours, the shortest daylight period. On the other hand, the city experiences the most sunshine hours in June and July with an average of 11.8 hours. The wind speed also sees variations across the year, with April having the sharpest winds at 8.6mph (13.8km/h).
The best time to visit Delta
The best time to visit Delta, Utah, would depend on the interests and the activities planned by the visitors. For those who prefer warm to hot temperatures, the period from June to August would be the ideal time to visit. These months experience elevated temperatures and minimal rainfall, ideal for outdoor activities. With a UV index of 7 during this period, protection from the sun would be essential.The visitors who prefer milder temperatures could choose to visit between the months of April and June or from September to November, during which the city experiences temperatures in the region of 53.2°F (11.8°C) to 80.2°F (26.8°C). The rainfall during these months is moderate, and the city enjoys ample daylight hours.
The worst time to visit Delta
For those not accustomed to cold conditions, the months from December to February might prove challenging. During those months, Delta experiences its lowest temperatures, dropping to 22.8°F (-5.1°C), and the maximum recorded snowfall.Spring weather in Delta
Spring in Delta, from March to May, sees a gradual rise in temperatures, starting from an average high of 53.2°F (11.8°C) in March and reaching 70.9°F (21.6°C) in May. Rainfall in these months ranges from 0.91" (23mm) to 0.63" (16mm), with the number of rainy days averaging around 9.6 in March and dropping down to 8.5 in May.Summer weather in Delta
The summer months in Delta run from June through August with temperatures peaking at an average high of 91.8°F (33.2°C) in July and only slightly lower in August at 90°F (32.2°C). Rainfall is sparse during this time, with June registering the lowest average rainfall for the year at 0.24" (6mm). The daylight hours are longest in June with a high of 14.9 hours.Autumn weather in Delta
The cool breeze of Autumn sweeps through Delta from September to November. During this time, temperatures cool down considerably, with an average high of 80.2°F (26.8°C) in September down to 50°F (10°C) in November. Rainfall averages around 0.47" (12mm) in these months, with approximately six rainy days each month.Winter weather in Delta
Winter hits Delta from December through February with average lows dropping to 22.8°F (-5.1°C) in January. This season also sees the highest snowfall with 3.98" (101mm) in December. Despite the cloudy weather, Delta experiences adequate sunshine, with 6.4 hours in December, though the daylight hours are at their shortest.Weather in January
Winter in Delta, Utah commences with generally cold temperatures and the highest relative humidity of 78%. As the month starts, it sees sub-freezing temperatures with a high of just 36.7°F (2.6°C) and a low of 22.8°F (-5.1°C). Weather in January »Weather in February
As Utah steps into February, the weather starts to shift towards comparatively milder temperatures. February exhibits fewer snowfall days and a slight decrease in relative humidity compared to January. In Delta, the average high temperature is slightly warmer at 42.1°F (5.6°C) while the lowest temperature remains below freezing at 27.9°F (-2.3°C). Weather in February »Weather in March
Delta welcomes spring in March with milder temperatures and reduced snowfall. The relative humidity drops to 52%, compared to February's 69%. The average high temperature climbs to a more comfortable 53.2°F (11.8°C) while the low stays at 36.7°F (2.6°C). Weather in March »Weather in April
April in Delta is the transition period from spring to warmer weather, with an average high temperature of 60.8°F (16°C). The low temperature also rises significantly, compared to the month before. The rainfall levels decline slightly to 0.75" (19mm), and the snow ceases making it a largely snow-free month. Weather in April »Weather in May
In May, Delta begins to experience summer weather, with average high temperatures rising sharply to 70.9°F (21.6°C). Similarly, the lows also increase, indicating warmer nights. In contrast to April, the rainfall decreases to 0.63" (16mm), marking it as a relatively drier month. Weather in May »Weather in June
June is one of the hottest months in Delta with an average high temperature of 84.4°F (29.1°C), making it significantly warmer than May. This hot month also exhibits the lowest relative humidity of the year at 24%. There is a noticeable decrease in rainfall, making it the driest month. Weather in June »Weather in July
In Delta, July is the peak of the summer season with the year's highest average high temperature recorded at 91.8°F (33.2°C). In comparison to June, July shows a slight increase in the relative humidity and rainfall. However, July offers the brightest days, with the longest sunlight duration of the year. Weather in July »Weather in August
August continues the trend of high temperatures in Delta with an average high of 90°F (32.2°C). Although a decrease in temperature from July, August remains hot. The rainfall slightly decreases again, and the days start to shorten. Weather in August »Weather in September
By September, Delta begins a gradual transition from summer to autumn. Even though it records an average high temperature of 80.2°F (26.8°C), September is significantly cooler than August. The rainfall and relative humidity increase slightly, indicating the approaching autumn season. Weather in September »Weather in October
October in Delta experiences more noticeable autumn weather with a drop in the average high temperature to 63.1°F (17.3°C). This cooler month sees an increase in rainfall, relative humidity, and a return of snowfall by the end of the month. Weather in October »Weather in November
Delta’s weather in November is recognized by colder temperatures and higher relative humidity compared to October. The average high temperature falls to 50°F (10°C), while the lows hover around freezing point. The month's weather is characterized by increased snowfall of 2.09" (53mm). Weather in November »Weather in December
December in Delta witnesses the onset of winter, characterized by freezing temperatures and an increase in relative humidity to 72%. With an average high temperature of 37.2°F (2.9°C) and a low of 24.1°F (-4.4°C), December is one of the coldest months. Weather in December »Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Delta notes the coldest temperatures in January, with a average high of 36.7°F (2.6°C) and a low of 22.8°F (-5.1°C).
January is the most humid month, with an average relative humidity of 78%.
Throughout the year, there are 82.6 rainfall days, and 7.01" (178mm) of precipitation is accumulated.
Months with snowfall are January through April, October through December.
In Delta, during the entire year, snow falls for 33.7 days and aggregates up to 14.96" (380mm) of snow.
With an average of 6.3h of sunshine, January has the least sunshine of the year.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the most rainfall is March, when the rain falls for 9.6 days and typically aggregates up to 0.91" (23mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Delta, 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.
May through September are months without snowfall.
With an average relative humidity of 24%, June is the least humid month.
The month with the least rainfall is June, when the rain falls for 3.9 days and typically collects 0.24" (6mm) of precipitation.
The month with the longest days is June, with an average of 14h and 54min of daylight.
The months with the highest UV index in Delta are June and July, with an average maximum UV index of 7.
During the warmest month in Delta, July, temperatures average a high of 91.8°F (33.2°C) and a low of 68.7°F (20.4°C).
The month with the most sunshine is August, with an average of 11.9h of sunshine.
The month with the most snowfall is December, when snow falls for 8.2 days and typically aggregates up to 3.98" (101mm) of snow.
December has the shortest days of the year, with an average of 9h and 30min of daylight.
Average temperature
Delta, UT
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (36.7°F).
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure
Delta, UT
- Average pressure in January:
30.25"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.88"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.19"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
Delta, UT
- Average wind speed in January:
4.7mph - Average wind speed in February:
6.5mph - Average wind speed in March:
8.2mph - Average wind speed in April:
8.6mph - Average wind speed in May:
8mph - Average wind speed in June:
8.8mph
- Average wind speed in July:
7.8mph - Average wind speed in August:
7.6mph - Average wind speed in September:
7.5mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.2mph - Average wind speed in December:
5.4mph
The windiest month (with the highest average wind speed) is June (8.8mph).
The calmest month (with the lowest average wind speed) is January (4.7mph).
Average humidity
Delta, UT
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is June (24%).
Average rainfall
Delta, UT
- Average rainfall in January:
0.59" - Average rainfall in February:
0.67" - Average rainfall in March:
0.91" - Average rainfall in April:
0.75" - Average rainfall in May:
0.63" - Average rainfall in June:
0.24"
- Average rainfall in July:
0.55" - Average rainfall in August:
0.39" - Average rainfall in September:
0.47" - Average rainfall in October:
0.47" - Average rainfall in November:
0.63" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is March (0.91").
The driest month (with the least rainfall) is June (0.24").
Average rainfall days
Delta, UT
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7 days - Average rainfall days in March:
9.6 days - Average rainfall days in April:
10 days - Average rainfall days in May:
8.5 days - Average rainfall days in June:
3.9 days
- Average rainfall days in July:
6.9 days - Average rainfall days in August:
5.8 days - Average rainfall days in September:
6.3 days - Average rainfall days in October:
6 days - Average rainfall days in November:
4.9 days - Average rainfall days in December:
6.4 days
The month with the highest number of rainy days is April (10 days).
The month with the least rainy days is June (3.9 days).
Average snowfall
Delta, UT
The month with the highest snowfall is December (3.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Delta, UT
- Average snowfall days in January:
7.5 days - Average snowfall days in February:
7.1 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
2.4 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.7 days - Average snowfall days in November:
3.4 days - Average snowfall days in December:
8.2 days
The month with the highest number of snowfall days is December (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Delta, UT
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
6h and 18min - Average sunshine in February:
7h and 54min - Average sunshine in March:
8h and 42min - Average sunshine in April:
10h and 18min - Average sunshine in May:
11h and 18min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 54min - Average sunshine in September:
9h and 48min - Average sunshine in October:
7h and 54min - Average sunshine in November:
7h and 0min - Average sunshine in December:
6h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 18min).
Average sunshine days
Delta, UT
- Average sunshine days in January:
20.3 days - Average sunshine days in February:
16.3 days - Average sunshine days in March:
18.5 days - Average sunshine days in April:
17.3 days - Average sunshine days in May:
19.8 days - Average sunshine days in June:
24.1 days
- Average sunshine days in July:
19.1 days - Average sunshine days in August:
19.8 days - Average sunshine days in September:
21.3 days - Average sunshine days in October:
22.5 days - Average sunshine days in November:
22.6 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is June (24.1 days).
The month with the least sunshine days is February (16.3 days).
Average UV index
Delta, UT
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Delta, UT
The month with the most cloud cover is December (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility
Delta, UT
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
