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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, the same as December, is another refreshing winter month in Rancho Cucamonga, California, with an average temperature fluctuating between 64°F (17.8°C) and 46.2°F (7.9°C). In January, Rancho Cucamonga notes an average high-temperature of a still refreshing 64°F (17.8°C), hardly different from the preceding month. Weather in January »
Weather in February
February, the last month of the winter in Rancho Cucamonga, is another comfortable month, with an average temperature fluctuating between 64°F (17.8°C) and 45.3°F (7.4°C). The shift into February finds Rancho Cucamonga at an average high-temperature of a still enjoyable 64°F (17.8°C), corresponding to January's conditions. Weather in February »
Weather in March
The first month of the spring, March, is an agreeable month in Rancho Cucamonga, California, with an average temperature varying between 46.9°F (8.3°C) and 68.4°F (20.2°C). As Rancho Cucamonga, California, welcomes March, the average high-temperature is noted at an agreeable 68.4°F (20.2°C), closely aligning with the preceding month. Weather in March »
Weather in April
April, like March, is an agreeable spring month in Rancho Cucamonga, California, with temperature in the range of an average high of 72.9°F (22.7°C) and an average low of 50.5°F (10.3°C). The arrival of April brings an average high-temperature of a still pleasant 72.9°F (22.7°C), nearly identical to March's 68.4°F (20.2°C). Weather in April »
Weather in May
May, the last month of the spring in Rancho Cucamonga, is a warm month, with an average temperature fluctuating between 53.6°F (12°C) and 76.6°F (24.8°C). Rancho Cucamonga's weather in May displays an average high-temperature of a warm 76.6°F (24.8°C), showing minor disparity from April's 72.9°F (22.7°C). Weather in May »
Weather in June
June, the first month of the summer in Rancho Cucamonga, is also a moderately hot month, with an average temperature ranging between min 58.6°F (14.8°C) and max 84.7°F (29.3°C). In Rancho Cucamonga, the onset of June comes with a modest high-temperature shift, transitioning from May's 76.6°F (24.8°C) to a still moderately hot 84.7°F (29.3°C). Weather in June »
Weather in July
July in Rancho Cucamonga, California, is a hot summer month, with an average temperature varying between 64.8°F (18.2°C) and 90.5°F (32.5°C). July signifies a subtle uplift in the average high-temperature, adjusting from a warm 84.7°F (29.3°C) in June to a tropical 90.5°F (32.5°C). Weather in July »
Weather in August
The last month of the summer, August, is another tropical month in Rancho Cucamonga, California, with temperature in the range of an average high of 91.8°F (33.2°C) and an average low of 66.6°F (19.2°C). In Rancho Cucamonga, the peak temperatures are generally noted in August, averaging a high of 91.8°F (33.2°C) and a low of 66.6°F (19.2°C). The average heat index in August is computed to be a hot 93.2°F (34°C). Weather in August »
Weather in September
September, the first month of the autumn in Rancho Cucamonga, is still a tropical month, with an average temperature ranging between max 88.3°F (31.3°C) and min 63.7°F (17.6°C). Rancho Cucamonga's weather in September, with an average high-temperature of a still hot 88.3°F (31.3°C), subtly shifts from August's 91.8°F (33.2°C). Weather in September »
Weather in October
October, like September, in Rancho Cucamonga, California, is a moderately hot autumn month, with an average temperature varying between 57.6°F (14.2°C) and 79.2°F (26.2°C). The average high-temperature drops in October, from September's tropical 88.3°F (31.3°C) to a warm 79.2°F (26.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is another pleasant month in Rancho Cucamonga, California, with temperature in the range of an average high of 70.7°F (21.5°C) and an average low of 50.9°F (10.5°C). Rancho Cucamonga's transition into November involves a gentle shift in temperature, receding from a moderately hot 79.2°F (26.2°C) in October to an agreeable 70.7°F (21.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also an enjoyable month in Rancho Cucamonga, California, with an average temperature varying between 61.7°F (16.5°C) and 45.3°F (7.4°C). December is the coldest month, with the temperature often reaching an average high of 61.7°F (16.5°C) and an average low of 45.3°F (7.4°C). Weather in December »
[Resources]Frequently asked questions
How many days does it rain in Rancho Cucamonga?
Throughout the year, in Rancho Cucamonga, there are 42.3 rainfall days, and 4.53" (115mm) of precipitation is accumulated.
When it does not snow in Rancho Cucamonga?
In Rancho Cucamonga, California, snow does not fall in January, March through December.
How many days does it snow in Rancho Cucamonga?
In Rancho Cucamonga, during the entire year, snow falls for 0.1 days.
What are the most humid months in Rancho Cucamonga?
February, March and May, with an average relative humidity of 53%, are most humid months.
What is the rainiest month in Rancho Cucamonga?
The month with the most rainfall is February, when the rain falls for 4.5 days and typically aggregates up to 0.98" (25mm) of precipitation.
When does it snow in Rancho Cucamonga?
February is the only month when snow falls in Rancho Cucamonga, California.
When does it snow the most in Rancho Cucamonga?
February has the most snowfall days of the year in Rancho Cucamonga, California. Snow falls for 0.1 days.
What are the months with the least sunshine in Rancho Cucamonga?
February and December, with an average of 6.9h of sunshine, are months with the least sunshine.
When is Daylight Saving Time (DST) in Rancho Cucamonga?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Rancho Cucamonga, California, 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 in Rancho Cucamonga?
The month with the least rainfall in Rancho Cucamonga, California, is June, when the rain falls for 0.9 days and typically collects 0.04" (1mm) of precipitation.
When are the longest days in Rancho Cucamonga?
June has the longest days of the year in Rancho Cucamonga, California, with an average of 14h and 24min of daylight.
What month has the most sunshine in Rancho Cucamonga?
July has the most sunshine of the year, with an average of 12.1h of sunshine.
When is the highest UV index in Rancho Cucamonga?
July and August, with an average maximum UV index of 7, are months with the highest UV index.
What are the warmest months in Rancho Cucamonga?
August registers as the month with the average highest temperatures, reaching 91.8°F (33.2°C) at its peak and 66.6°F (19.2°C) at the lowest.
What is the least humid month in Rancho Cucamonga?
The least humid month in Rancho Cucamonga is August, with an average relative humidity of 41%.
What is the coldest month in Rancho Cucamonga?
December is the month when Rancho Cucamonga, California, sees the average lowest temperatures, with a high of 61.7°F (16.5°C) and a low of 45.3°F (7.4°C).
What is the month with the shortest days in Rancho Cucamonga?
The month with the shortest days in Rancho Cucamonga, California, is December, with an average of 9h and 54min of daylight.
When is the lowest UV index in Rancho Cucamonga?
With an average maximum UV index of 3, December is the month with the lowest UV index in Rancho Cucamonga, California.
Average temperature
Rancho Cucamonga, CA
The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is December (61.7°F).
The month with the highest average low temperature is August (66.6°F).
The coldest months (with the lowest average low temperature) are February and December (45.3°F).
Average pressure
Rancho Cucamonga, CA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.04"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.9"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
Rancho Cucamonga, CA
- Average wind speed in January:
5.3mph - Average wind speed in February:
5mph - Average wind speed in March:
5.3mph - Average wind speed in April:
5.8mph - Average wind speed in May:
5.9mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
4.8mph - Average wind speed in September:
4.5mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is May (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity
Rancho Cucamonga, CA
The months with the highest relative humidity are February, March and May (53%).
The month with the lowest relative humidity is August (41%).
Average rainfall
Rancho Cucamonga, CA
- Average rainfall in January:
0.51" - Average rainfall in February:
0.98" - Average rainfall in March:
0.39" - Average rainfall in April:
0.47" - Average rainfall in May:
0.2" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.16" - Average rainfall in August:
0.12" - Average rainfall in September:
0.08" - Average rainfall in October:
0.16" - Average rainfall in November:
0.51" - Average rainfall in December:
0.91"
The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Rancho Cucamonga, CA
- Average rainfall days in January:
4.6 days - Average rainfall days in February:
4.5 days - Average rainfall days in March:
6.3 days - Average rainfall days in April:
5.4 days - Average rainfall days in May:
3.2 days - Average rainfall days in June:
0.9 days
- Average rainfall days in July:
2.8 days - Average rainfall days in August:
1.9 days - Average rainfall days in September:
1.8 days - Average rainfall days in October:
2.1 days - Average rainfall days in November:
3.3 days - Average rainfall days in December:
5.5 days
The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.9 days).
Average snowfall days
Rancho Cucamonga, 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
Rancho Cucamonga, 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 1min - 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
Rancho Cucamonga, CA
- Average sunshine days in January:
25.8 days - Average sunshine days in February:
22.8 days - Average sunshine days in March:
24.6 days - Average sunshine days in April:
24 days - Average sunshine days in May:
26.2 days - Average sunshine days in June:
28.3 days
- Average sunshine days in July:
25.3 days - Average sunshine days in August:
26.8 days - Average sunshine days in September:
26 days - Average sunshine days in October:
27.4 days - Average sunshine days in November:
26 days - Average sunshine days in December:
24.4 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (22.8 days).
Average UV index
Rancho Cucamonga, 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
Rancho Cucamonga, CA
The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility
Rancho Cucamonga, 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).
Rancho Cucamonga, California, USA
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