Climate and monthly weather forecastNorth Cucamonga, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another enjoyable winter month in North Cucamonga, California, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 46.2°F (7.9°C). North Cucamonga's average high-temperature in January sits at a still enjoyable 64°F (17.8°C), showing little difference from the previous month. Weather in January »Weather in February
February, the last month of the winter in North Cucamonga, is another refreshing month, with an average temperature varying between 45.3°F (7.4°C) and 64°F (17.8°C). North Cucamonga notes a minor change to an average high temperature of a still refreshing 64°F (17.8°C) in February, remaining consistent with January. Weather in February »Weather in March
March, the first month of the spring in North Cucamonga, is an agreeable month, with an average temperature ranging between min 46.9°F (8.3°C) and max 68.4°F (20.2°C). The shift into March records an average high-temperature of a pleasant 68.4°F (20.2°C), subtly varied from February's 64°F (17.8°C). Weather in March »Weather in April
April, like March, is an agreeable spring month in North 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). April's advent notes a subtle adjustment in average high-temperature to a still pleasant 72.9°F (22.7°C) from March. Weather in April »Weather in May
May, the last month of the spring in North Cucamonga, is a moderately hot month, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 53.6°F (12°C). North Cucamonga, California, experiences an average high-temperature of a warm 76.6°F (24.8°C) in May, marking an insignificant shift from 72.9°F (22.7°C) in April. Weather in May »Weather in June
June, the first month of the summer in North Cucamonga, is also a moderately hot month, with an average temperature fluctuating between 84.7°F (29.3°C) and 58.6°F (14.8°C). June sees a marginal temperature increase, moving from a warm 76.6°F (24.8°C) in May to a still moderately hot 84.7°F (29.3°C). Weather in June »Weather in July
July is a hot summer month in North Cucamonga, California, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 90.5°F (32.5°C). A slight uplift in the average high-temperature marks July, adjusting from June's warm 84.7°F (29.3°C) to a tropical 90.5°F (32.5°C). Weather in July »Weather in August
The last month of the summer, August, is also a hot month in North Cucamonga, California, with an average temperature fluctuating between 66.6°F (19.2°C) and 91.8°F (33.2°C). North Cucamonga's August weather reaches an average high of 91.8°F (33.2°C) and an average low of 66.6°F (19.2°C), making it the warmest month. In August, the heat index is evaluated at a tropical 93.2°F (34°C). Weather in August »Weather in September
September, the first month of the autumn in North Cucamonga, is still a hot month, with an average temperature varying between 63.7°F (17.6°C) and 88.3°F (31.3°C). Upon the onset of September, North Cucamonga witnesses an average high-temperature of a still tropical 88.3°F (31.3°C), showing a close resemblance to the prior month. Weather in September »Weather in October
October, like September, in North Cucamonga, California, is a moderately hot autumn month, with an average temperature ranging between max 79.2°F (26.2°C) and min 57.6°F (14.2°C). October brings a drop in North Cucamonga's average high-temperature, falling from a tropical 88.3°F (31.3°C) in September to a warm 79.2°F (26.2°C). Weather in October »Weather in November
November, the last month of the autumn in North Cucamonga, is also an agreeable month, with temperature in the range of an average low of 50.9°F (10.5°C) and an average high of 70.7°F (21.5°C). November signals a slight drop in average high-temperature, sliding from October's warm 79.2°F (26.2°C) to a pleasant 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 North Cucamonga, California, with an average temperature fluctuating between 45.3°F (7.4°C) and 61.7°F (16.5°C). In North Cucamonga, the month of December registers the lowest temperatures, averaging 61.7°F (16.5°C) at the peak and 45.3°F (7.4°C) at the lowest. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
North 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
North 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
North 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
North 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
North 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
North 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
North 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
North Cucamonga, CA
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 24min
- Average daylight in July:
14h and 12min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
9h and 54min
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 54min - Average sunshine in March:
9h and 6min - Average sunshine in April:
11h and 24min - Average sunshine in May:
11h and 48min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 42min - Average sunshine in October:
8h and 54min - Average sunshine in November:
7h and 24min - Average sunshine in December:
6h and 54min
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
North 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
North 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
North 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
North 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).





