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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 daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Rowland Heights, California, is another comfortable winter month, with temperature in the range of an average low of 50.2°F (10.1°C) and an average high of 66.9°F (19.4°C). The average high-temperature for January is a still enjoyable 66.9°F (19.4°C), closely aligning with the temperature of the preceding month. Weather in January »
Weather in February
February, the last month of the winter in Rowland Heights, is another refreshing month, with temperature in the range of an average high of 66.7°F (19.3°C) and an average low of 48.9°F (9.4°C). The advent of February reveals an average high-temperature of a still enjoyable 66.7°F (19.3°C), showing minimal difference from the prior month. Weather in February »
Weather in March
March, the first month of the spring in Rowland Heights, is an agreeable month, with an average temperature fluctuating between 50.7°F (10.4°C) and 70.2°F (21.2°C). With the onset of March, a modest change to an agreeable 70.2°F (21.2°C) from February's 66.7°F (19.3°C) is noted in high-temperature. Weather in March »
Weather in April
April in Rowland Heights, California, is a warm spring month, with an average temperature ranging between max 73.6°F (23.1°C) and min 53.2°F (11.8°C). Rowland Heights notes an average high-temperature of a warm 73.6°F (23.1°C) in April, displaying minor variation from March. Weather in April »
Weather in May
The last month of the spring, May, is another warm month in Rowland Heights, California, with an average temperature fluctuating between 75.7°F (24.3°C) and 55.9°F (13.3°C). The commencement of May records an average high-temperature of a still moderately hot 75.7°F (24.3°C), barely varying from April's 73.6°F (23.1°C). Weather in May »
Weather in June
June, the first month of the summer in Rowland Heights, is still a warm month, with an average temperature ranging between min 59.2°F (15.1°C) and max 80.8°F (27.1°C). Rowland Heights notes an average high-temperature of a still moderately hot 80.8°F (27.1°C) in June, hardly diverging from May. Weather in June »
Weather in July
July in Rowland Heights, California, is a hot summer month, with an average temperature ranging between min 64.6°F (18.1°C) and max 86.5°F (30.3°C). With the beginning of July, Rowland Heights's average high-temperature sees a minor increase, transitioning from a moderately hot 80.8°F (27.1°C) in June to a hot 86.5°F (30.3°C). Weather in July »
Weather in August
The last month of the summer, August, is another tropical month in Rowland Heights, California, with an average temperature fluctuating between 66.2°F (19°C) and 88.3°F (31.3°C). With average temperatures fluctuating between a high of 88.3°F (31.3°C) and a low of 66.2°F (19°C), August stands out as the warmest month. In August, the heat index is calculated to be a tropical 91.4°F (33°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a hot month in Rowland Heights, California, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 86°F (30°C). September registers an average high-temperature of a still hot 86°F (30°C), slightly varied from August's 88.3°F (31.3°C). Weather in September »
Weather in October
October, like September, in Rowland Heights, California, is another warm autumn month, with an average temperature ranging between min 60.6°F (15.9°C) and max 79.7°F (26.5°C). With the arrival of October, Rowland Heights notices a mild change in the average high-temperature, sliding from September's tropical 86°F (30°C) to a warm 79.7°F (26.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Rowland Heights, is another pleasant month, with an average temperature ranging between min 54.9°F (12.7°C) and max 72.7°F (22.6°C). November sees a slight reduction in average high-temperature, with a shift from a moderately hot 79.7°F (26.5°C) in October to an agreeable 72.7°F (22.6°C). Weather in November »
Weather in December
December, the first month of the winter in Rowland Heights, is still a comfortable month, with an average temperature fluctuating between 49.5°F (9.7°C) and 64.9°F (18.3°C). December stands out as Rowland Heights's coldest month, with an average high-temperature of 64.9°F (18.3°C) and a low-temperature of 49.5°F (9.7°C). Weather in December »
Updated: Aug 30, 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?
Throughout the year, there are 43.8 rainfall days, and 7.01" (178mm) of precipitation is accumulated.
What is the month with the lowest UV index in Rowland Heights?
January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index.
What are the months with the least sunshine?
The months with the least sunshine are February and December, with an average of 6.8h of sunshine.
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 most humid month?
The most humid month is June, with an average relative humidity of 59%.
What is the driest month?
The months with the least rainfall are June and August Rain falls for 1.1 days and accumulates 0.04" (1mm) of rain.
When are the longest days?
The month with the longest days is June, 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 part of the year is the hottest?
With average high and low temperatures of 88.3°F (31.3°C) and 66.2°F (19°C) respectively, August is Rowland Heights's warmest month.
When is the highest UV index in Rowland Heights?
With an average maximum UV index of 7, August is the month with the highest UV index.
What is the least humid month?
With an average relative humidity of 46%, November is the least humid month.
What is the coldest month?
With an average high-temperature of 64.9°F (18.3°C) and an average low-temperature of 49.5°F (9.7°C), December is the coldest month.
What is the wettest month?
The month with the most rainfall is December, when the rain falls for 6 days and typically aggregates up to 1.61" (41mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 54min of daylight.
Average temperature
Rowland Heights, CA
The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is December (64.9°F).
The month with the highest average low temperature is August (66.2°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).
Average pressure
Rowland Heights, CA
- Average pressure in January:
30.1"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:
30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Rowland Heights, 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:
5.7mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.7mph - Average wind speed in September:
4.6mph - Average wind speed in October:
4.7mph - Average wind speed in November:
5mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).
Average humidity
Rowland Heights, CA
The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (46%).
Average rainfall
Rowland Heights, CA
- Average rainfall in January:
1.26" - Average rainfall in February:
1.54" - Average rainfall in March:
0.87" - Average rainfall in April:
0.55" - Average rainfall in May:
0.16" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.12" - Average rainfall in August:
0.04" - Average rainfall in September:
0.08" - Average rainfall in October:
0.16" - Average rainfall in November:
0.59" - Average rainfall in December:
1.61"
The wettest month (with the highest rainfall) is December (1.61").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days
Rowland Heights, CA
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
5.5 days - Average rainfall days in March:
6.6 days - Average rainfall days in April:
5.2 days - Average rainfall days in May:
3.3 days - Average rainfall days in June:
1.1 days
- Average rainfall days in July:
2.3 days - Average rainfall days in August:
1.2 days - Average rainfall days in September:
2.1 days - Average rainfall days in October:
2.5 days - Average rainfall days in November:
3.2 days - Average rainfall days in December:
6 days
The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is June (1.1 days).
Average daylight / Average sunshine
Rowland Heights, 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:
13h and 5min - 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:
6h and 5min - Average sunshine in February:
6h and 5min - Average sunshine in March:
8h and 5min - Average sunshine in April:
11h and 0min - Average sunshine in May:
11h and 1min - Average sunshine in June:
11h and 5min
- 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 4min - Average sunshine in November:
7h and 1min - 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 48min).
Average sunshine days
Rowland Heights, CA
- Average sunshine days in January:
25.3 days - Average sunshine days in February:
21.6 days - Average sunshine days in March:
24 days - Average sunshine days in April:
24.1 days - Average sunshine days in May:
26.4 days - Average sunshine days in June:
28.1 days
- Average sunshine days in July:
27.7 days - Average sunshine days in August:
28.2 days - Average sunshine days in September:
26.1 days - Average sunshine days in October:
26.8 days - Average sunshine days in November:
25.4 days - Average sunshine days in December:
24 days
The month with the most sunshine days is August (28.2 days).
The month with the least sunshine days is February (21.6 days).
Average UV index
Rowland Heights, CA
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover
Rowland Heights, 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
Rowland Heights, 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).
Rowland Heights, California, USA
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