Climate and monthly weather forecastDuarte, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another enjoyable winter month in Duarte, California, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 46.9°F (8.3°C). Duarte notes an average high-temperature of a still comfortable 64°F (17.8°C) in January, displaying minor variation from December. Weather in January »Weather in February
February, the last month of the winter in Duarte, is another comfortable month, with an average temperature ranging between min 46°F (7.8°C) and max 64°F (17.8°C). The transition into February marks the average high-temperature at a still enjoyable 64°F (17.8°C), identical to January. Weather in February »Weather in March
March, the first month of the spring in Duarte, is still a refreshing month, with temperature in the range of an average low of 47.3°F (8.5°C) and an average high of 67.5°F (19.7°C). Transitioning from February to March, Duarte observes an average high-temperature of a still refreshing 67.5°F (19.7°C), differing subtly from the previous month. Weather in March »Weather in April
April in Duarte, California, is an agreeable spring month, with an average temperature fluctuating between 72.1°F (22.3°C) and 49.6°F (9.8°C). April observes an average high-temperature of a pleasant 72.1°F (22.3°C), marking an insignificant difference from March's 67.5°F (19.7°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Duarte, California, with an average temperature varying between 75.2°F (24°C) and 53.4°F (11.9°C). Duarte registers an average high-temperature of a moderately hot 75.2°F (24°C) with the arrival of May, showing minor deviation from the preceding month. Weather in May »Weather in June
June, the first month of the summer in Duarte, is also a moderately hot month, with an average temperature ranging between min 57.7°F (14.3°C) and max 81.5°F (27.5°C). As June sets, the average high-temperature shows a slight increase, moving up from 75.2°F (24°C) in May to a still moderately hot 81.5°F (27.5°C). Weather in June »Weather in July
July in Duarte, California, is a tropical summer month, with an average temperature varying between 86.9°F (30.5°C) and 63.5°F (17.5°C). Duarte observes a slight uplift in the average high-temperature with the onset of July, adjusting from June's moderately hot 81.5°F (27.5°C) to a tropical 86.9°F (30.5°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Duarte, California, with an average temperature fluctuating between 64.8°F (18.2°C) and 88.2°F (31.2°C). August, with an average high of 88.2°F (31.2°C) and a low of 64.8°F (18.2°C), signifies the warmest month of the year. The heat index value for August is estimated at a tropical 89.6°F (32°C). Weather in August »Weather in September
September, the first month of the autumn in Duarte, is also a moderately hot month, with an average temperature varying between 62.8°F (17.1°C) and 85.5°F (29.7°C). The weather during September records an average high-temperature of a moderately hot 85.5°F (29.7°C), closely mirroring the preceding month. Weather in September »Weather in October
October, the same as September, is another warm autumn month in Duarte, California, with an average temperature fluctuating between 58.1°F (14.5°C) and 78.1°F (25.6°C). With the onset of October, Duarte experiences a modest temperature adjustment, with the average high-temperature gently receding from 85.5°F (29.7°C) in September to a still moderately hot 78.1°F (25.6°C). Weather in October »Weather in November
November, the last month of the autumn in Duarte, is also an agreeable month, with an average temperature varying between 52°F (11.1°C) and 70°F (21.1°C). As November begins, there is a minor decrease in the average high-temperature, softly falling from a warm 78.1°F (25.6°C) in October to an agreeable 70°F (21.1°C). Weather in November »Weather in December
The first month of the winter, December, is also an enjoyable month in Duarte, California, with an average temperature ranging between max 61.7°F (16.5°C) and min 45.7°F (7.6°C). December, recording an average high temperature of 61.7°F (16.5°C) and a low temperature of 45.7°F (7.6°C), is Duarte's coldest month. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Duarte, CA
The warmest month (with the highest average high temperature) is August (88.2°F).
The month with the lowest average high temperature is December (61.7°F).
The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is December (45.7°F).
Average pressure
Duarte, CA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.89"Hg - Average pressure in September:
29.89"Hg - Average pressure in October:
29.95"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Duarte, CA
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.1mph - Average wind speed in March:
5.2mph - Average wind speed in April:
5.8mph - Average wind speed in May:
5.7mph - Average wind speed in June:
5.3mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.6mph - Average wind speed in September:
4.5mph - Average wind speed in October:
4.7mph - Average wind speed in November:
5mph - Average wind speed in December:
5.3mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity
Duarte, CA
The months with the highest relative humidity are March and May (56%).
The month with the lowest relative humidity is November (46%).
Average rainfall
Duarte, CA
- Average rainfall in January:
1.46" - Average rainfall in February:
1.77" - Average rainfall in March:
0.98" - Average rainfall in April:
0.67" - Average rainfall in May:
0.24" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.2" - Average rainfall in August:
0.12" - Average rainfall in September:
0.12" - Average rainfall in October:
0.28" - Average rainfall in November:
0.83" - Average rainfall in December:
1.77"
The wettest months (with the highest rainfall) are February and December (1.77").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Duarte, CA
- Average rainfall days in January:
5.8 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
7.4 days - Average rainfall days in April:
5.8 days - Average rainfall days in May:
3.6 days - Average rainfall days in June:
1.1 days
- Average rainfall days in July:
3.2 days - Average rainfall days in August:
1.9 days - Average rainfall days in September:
2.6 days - Average rainfall days in October:
3.2 days - Average rainfall days in November:
4.3 days - Average rainfall days in December:
6.1 days
The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.1 days).
Average daylight / Average sunshine
Duarte, 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:
6h and 54min - Average sunshine in February:
6h and 54min - Average sunshine in March:
8h and 48min - Average sunshine in April:
11h and 18min - Average sunshine in May:
11h and 42min - 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 48min - Average sunshine in October:
8h and 42min - Average sunshine in November:
7h and 18min - 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 January, February and December (Average sunshine: 6h and 54min).
Average sunshine days
Duarte, CA
- Average sunshine days in January:
24.6 days - Average sunshine days in February:
21 days - Average sunshine days in March:
23.2 days - Average sunshine days in April:
22.8 days - Average sunshine days in May:
26.1 days - Average sunshine days in June:
28.3 days
- Average sunshine days in July:
25.6 days - Average sunshine days in August:
27.8 days - Average sunshine days in September:
26.2 days - Average sunshine days in October:
26.1 days - Average sunshine days in November:
24.6 days - Average sunshine days in December:
24 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21 days).
Average UV index
Duarte, CA
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Duarte, CA
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility
Duarte, 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).





