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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Upland, California, is another comfortable winter month, with temperature in the range of an average high of 64.6°F (18.1°C) and an average low of 46.8°F (8.2°C). The shift to January signals an average high-temperature of a still enjoyable 64.6°F (18.1°C), subtly varied from December's 62.1°F (16.7°C). Weather in January »
Weather in February
The last month of the winter, February, is another refreshing month in Upland, California, with an average temperature varying between 45.7°F (7.6°C) and 64°F (17.8°C). The transition into February shows a subtle variation to a still refreshing 64°F (17.8°C) from January's 64.6°F (18.1°C) in the average high-temperature. Weather in February »
Weather in March
March, the first month of the spring in Upland, is a pleasant month, with an average temperature ranging between max 68.4°F (20.2°C) and min 46.9°F (8.3°C). As February transitions into March, the average high-temperature rests at an agreeable 68.4°F (20.2°C), maintaining a close resemblance to the previous month. Weather in March »
Weather in April
April, like March, is another pleasant spring month in Upland, California, with an average temperature fluctuating between 72.9°F (22.7°C) and 50.2°F (10.1°C). April's commencement is accompanied by an average high-temperature of a still pleasant 72.9°F (22.7°C), diverging marginally from March's 68.4°F (20.2°C). Weather in April »
Weather in May
May, the last month of the spring in Upland, is a warm month, with an average temperature fluctuating between 76.6°F (24.8°C) and 53.6°F (12°C). Upland's weather, upon May's arrival, documents an average high-temperature of a moderately hot 76.6°F (24.8°C), nearly identical to the prior month. Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Upland, California, with temperature in the range of an average high of 84°F (28.9°C) and an average low of 58.5°F (14.7°C). The shift into June is characterized by a subtle rise in the average high-temperature, transitioning from May's moderately hot 76.6°F (24.8°C) to a still warm 84°F (28.9°C). Weather in June »
Weather in July
July is a tropical summer month in Upland, California, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 90°F (32.2°C). Upland observes a slight uplift in the average high-temperature with the onset of July, adjusting from June's warm 84°F (28.9°C) to a hot 90°F (32.2°C). Weather in July »
Weather in August
The last month of the summer, August, is another tropical month in Upland, California, with temperature in the range of an average high of 91°F (32.8°C) and an average low of 65.8°F (18.8°C). During the warmest month, August, temperatures average a high of 91°F (32.8°C) and a low of 65.8°F (18.8°C). For August, the heat index is calculated to be a tropical 93.2°F (34°C). Weather in August »
Weather in September
September, the first month of the autumn in Upland, is still a hot month, with an average temperature fluctuating between 63.5°F (17.5°C) and 88.2°F (31.2°C). An average high-temperature of a still tropical 88.2°F (31.2°C) marks September, exhibiting a close resemblance to the conditions in August. Weather in September »
Weather in October
October, the same as September, is a moderately hot autumn month in Upland, California, with an average temperature varying between 57.9°F (14.4°C) and 79°F (26.1°C). A subtle decrease in the average high-temperature marks October, falling from September's tropical 88.2°F (31.2°C) to a moderately hot 79°F (26.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is also an agreeable month in Upland, California, with an average temperature fluctuating between 50.9°F (10.5°C) and 70.7°F (21.5°C). November's onset brings a negligible change in high-temperatures, falling from a warm 79°F (26.1°C) in October to an agreeable 70.7°F (21.5°C). Weather in November »
Weather in December
December, the first month of the winter in Upland, is still a refreshing month, with an average temperature varying between 45.5°F (7.5°C) and 62.1°F (16.7°C). The coldest period tends to be December, when average temperatures fluctuate between a high of 62.1°F (16.7°C) and a low of 45.5°F (7.5°C). Weather in December »
Updated: Aug 6, 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
How much does it rain?
In Upland, during the entire year, the rain falls for 49.6 days and collects up to 7.8" (198mm) of precipitation.
When it does not snow?
January, March through December are months without snowfall.
How many days does it snow?
In Upland, California, during the entire year, snow falls for 0.1 days.
What is the wettest month?
February is the month with the most rainfall. Rain falls for 6 days and accumulates 1.77" (45mm) of precipitation.
When does it snow?
February is the only month when snow falls.
What is the snowiest month?
The month with the most snowfall days is February, when snow falls for 0.1 days.
What is the month with the least sunshine?
February and December, with an average of 6.9h of sunshine, are months with the least sunshine.
What is the most humid month?
March and May, with an average relative humidity of 54%, are most humid months.
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 PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
What is the driest month?
The month with the least rainfall is June, when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.
When are the longest days?
June has the longest days of the year, with an average of 14h and 24min of daylight.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 12.1h of sunshine.
What is the month with the highest UV index?
July and August, with an average maximum UV index of 7, are months with the highest UV index.
What part of the year is the hottest?
In Upland, the average highest temperatures are observed in August, with a high of 91°F (32.8°C) and a low of 65.8°F (18.8°C).
What is the least humid month?
The least humid month is August, with an average relative humidity of 42%.
What are the coldest months?
With average temperatures fluctuating between a high of 62.1°F (16.7°C) and a low of 45.5°F (7.5°C), December stands out as the coldest month.
What is the month with the shortest days in Upland?
December has the shortest days of the year, with an average of 9h and 54min of daylight.
What is the month with the lowest UV index?
With an average maximum UV index of 3, December is the month with the lowest UV index.
Average temperature
Upland, CA
The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is December (62.1°F).
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).
Average pressure
Upland, CA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.89"Hg - Average pressure in August:
29.88"Hg - Average pressure in September:
29.88"Hg - Average pressure in October:
29.94"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
Upland, CA
- Average wind speed in January:
5.3mph - Average wind speed in February:
5mph - Average wind speed in March:
5.2mph - Average wind speed in April:
5.8mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.4mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
4.7mph - Average wind speed in September:
4.4mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5mph - Average wind speed in December:
5.2mph
The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity
Upland, CA
The months with the highest relative humidity are March and May (54%).
The month with the lowest relative humidity is August (42%).
Average rainfall
Upland, CA
- Average rainfall in January:
1.18" - Average rainfall in February:
1.77" - Average rainfall in March:
0.79" - Average rainfall in April:
0.71" - Average rainfall in May:
0.24" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.16" - Average rainfall in August:
0.12" - Average rainfall in September:
0.12" - Average rainfall in October:
0.24" - Average rainfall in November:
0.75" - Average rainfall in December:
1.69"
The wettest month (with the highest rainfall) is February (1.77").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Upland, CA
- Average rainfall days in January:
5.4 days - Average rainfall days in February:
6 days - Average rainfall days in March:
7.1 days - Average rainfall days in April:
5.7 days - Average rainfall days in May:
3.8 days - Average rainfall days in June:
1.2 days
- Average rainfall days in July:
2.8 days - Average rainfall days in August:
1.7 days - Average rainfall days in September:
2.5 days - Average rainfall days in October:
3 days - Average rainfall days in November:
4 days - Average rainfall days in December:
6.4 days
The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.2 days).
Average snowfall days
Upland, CA
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.1 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 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 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Upland, CA
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
7h and 0min - Average sunshine in February:
6h and 5min - Average sunshine in March:
9h and 0min - Average sunshine in April:
11h and 2min - Average sunshine in May:
11h and 5min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
12h and 1min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 4min - Average sunshine in October:
8h and 5min - Average sunshine in November:
7h and 2min - Average sunshine in December:
6h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days
Upland, CA
- Average sunshine days in January:
24.6 days - Average sunshine days in February:
21.5 days - Average sunshine days in March:
23.6 days - Average sunshine days in April:
23.8 days - Average sunshine days in May:
26 days - Average sunshine days in June:
28.2 days
- Average sunshine days in July:
25.4 days - Average sunshine days in August:
26.8 days - Average sunshine days in September:
25.4 days - Average sunshine days in October:
26.5 days - Average sunshine days in November:
25.5 days - Average sunshine days in December:
23.2 days
The month with the most sunshine days is June (28.2 days).
The month with the least sunshine days is February (21.5 days).
Average UV index
Upland, CA
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Upland, CA
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility
Upland, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Upland, California, USA
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