Climate and monthly weather forecastRiverdale Park, CA
Climate and monthly weather forecast
Weather in January
January, like December, is another mild winter month in Riverdale Park, California, with temperature in the range of an average low of 41.9°F (5.5°C) and an average high of 57.7°F (14.3°C). January brings an average high-temperature of a still mild 57.7°F (14.3°C), nearly identical to the preceding month. Weather in January »Weather in February
The last month of the winter, February, is an enjoyable month in Riverdale Park, California, with an average temperature fluctuating between 42.3°F (5.7°C) and 61.2°F (16.2°C). The shift from January to February is characterized by an average high-temperature of a still refreshing 61.2°F (16.2°C), not significantly different from the 57.7°F (14.3°C) of January. Weather in February »Weather in March
The first month of the spring, March, is still a refreshing month in Riverdale Park, California, with an average temperature fluctuating between 44.2°F (6.8°C) and 65.7°F (18.7°C). Riverdale Park's weather in March displays an average high-temperature of a still comfortable 65.7°F (18.7°C), showing minor disparity from February's 61.2°F (16.2°C). Weather in March »Weather in April
April is an agreeable spring month in Riverdale Park, California, with an average temperature varying between 72.1°F (22.3°C) and 47.7°F (8.7°C). The coming of April brings a minor shift in Riverdale Park's weather, with average high-temperatures adjusting from March's comfortable 65.7°F (18.7°C) to an agreeable 72.1°F (22.3°C). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Riverdale Park, California, with an average temperature varying between 80.1°F (26.7°C) and 52.7°F (11.5°C). Riverdale Park's weather shows a minor temperature rise with the arrival of May, moving from a pleasant 72.1°F (22.3°C) in April to a warm 80.1°F (26.7°C). Weather in May »Weather in June
The first month of the summer, June, is a hot month in Riverdale Park, California, with an average temperature ranging between max 91°F (32.8°C) and min 59.2°F (15.1°C). With the onset of June, Riverdale Park experiences a temperature shift, with the average high-temperature moving from a moderately hot 80.1°F (26.7°C) in May to a hot 91°F (32.8°C). Weather in June »Weather in July
July is a torrid summer month in Riverdale Park, California, with an average temperature ranging between min 62.1°F (16.7°C) and max 97.7°F (36.5°C). With average high temperatures of 97.7°F (36.5°C) and lows of 62.1°F (16.7°C), July is the warmest month. Weather in July »Weather in August
August, the last month of the summer in Riverdale Park, is another very hot month, with an average temperature varying between 61.7°F (16.5°C) and 96.4°F (35.8°C). The arrival of August sees a recorded average high-temperature of a still torrid 96.4°F (35.8°C), showing little divergence from the previous month's conditions. Weather in August »Weather in September
September, the first month of the autumn in Riverdale Park, is still a tropical month, with an average temperature ranging between min 59.9°F (15.5°C) and max 90.9°F (32.7°C). The shift from August to September coincides with a small decrease in the average high-temperature, down to a hot 90.9°F (32.7°C) from a very hot 96.4°F (35.8°C). Weather in September »Weather in October
October, the same as September, is another warm autumn month in Riverdale Park, California, with an average temperature fluctuating between 54.5°F (12.5°C) and 77.9°F (25.5°C). The onset of October entails a temperature shift, as the average high-temperature decreases from a tropical 90.9°F (32.7°C) in September to a moderately hot 77.9°F (25.5°C). Weather in October »Weather in November
November, the last month of the autumn in Riverdale Park, is another refreshing month, with an average temperature varying between 46.9°F (8.3°C) and 65.3°F (18.5°C). The onset of November brings a small change in high-temperatures, falling from a warm 77.9°F (25.5°C) in October to a comfortable 65.3°F (18.5°C). Weather in November »Weather in December
The first month of the winter, December, is also a moderate month in Riverdale Park, California, with an average temperature ranging between max 55.6°F (13.1°C) and min 41.9°F (5.5°C). With average high temperatures of 55.6°F (13.1°C) and lows of 41.9°F (5.5°C), December is the coldest month. Weather in December »Updated: Aug 13, 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
January is the most humid month, with an average relative humidity of 72%.
In Riverdale Park, during the entire year, the rain falls for 54.3 days and collects up to 6.54" (166mm) of precipitation.
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Riverdale Park, California.
March is the month with the most rainfall. Rain falls for 10.3 days and accumulates 1.3" (33mm) of precipitation.
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.
June has the longest days of the year, with an average of 14h and 42min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 7.
July is the month when Riverdale Park sees the average highest temperatures, with a high of 97.7°F (36.5°C) and a low of 62.1°F (16.7°C).
The least humid month is July, with an average relative humidity of 37%.
The months with the least rainfall are July and August Rain falls for 1.3 days and accumulates 0.04" (1mm) of rain.
The month with the most sunshine is July, with an average of 12.1h of sunshine.
December, with average temperatures reaching a high of 55.6°F (13.1°C) and a low of 41.9°F (5.5°C), is the coldest month.
December has the shortest days of the year, with an average of 9h and 36min of daylight.
December has the least sunshine of the year, with an average of 6h of sunshine.
Average temperature
Riverdale Park, CA
The warmest month (with the highest average high temperature) is July (97.7°F).
The month with the lowest average high temperature is December (55.6°F).
The month with the highest average low temperature is July (62.1°F).
The coldest months (with the lowest average low temperature) are January and December (41.9°F).
Average pressure
Riverdale Park, CA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.02"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.93"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Riverdale Park, CA
- Average wind speed in January:
5.3mph - Average wind speed in February:
6.3mph - Average wind speed in March:
6.2mph - Average wind speed in April:
6.5mph - Average wind speed in May:
6.7mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.9mph - Average wind speed in August:
6.5mph - Average wind speed in September:
5.8mph - Average wind speed in October:
5.7mph - Average wind speed in November:
5.2mph - Average wind speed in December:
5.7mph
The windiest month (with the highest average wind speed) is June (7.3mph).
The calmest month (with the lowest average wind speed) is November (5.2mph).
Average humidity
Riverdale Park, CA
The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (37%).
Average rainfall
Riverdale Park, CA
- Average rainfall in January:
0.75" - Average rainfall in February:
0.94" - Average rainfall in March:
1.3" - Average rainfall in April:
0.67" - Average rainfall in May:
0.39" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.08" - Average rainfall in October:
0.35" - Average rainfall in November:
0.67" - Average rainfall in December:
1.22"
The wettest month (with the highest rainfall) is March (1.3").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Riverdale Park, CA
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
6.4 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
7.4 days - Average rainfall days in May:
3.6 days - Average rainfall days in June:
1 days
- Average rainfall days in July:
1.3 days - Average rainfall days in August:
0.9 days - Average rainfall days in September:
1.6 days - Average rainfall days in October:
2.5 days - Average rainfall days in November:
5.2 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight / Average sunshine
Riverdale Park, CA
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
6h and 18min - Average sunshine in February:
6h and 18min - Average sunshine in March:
8h and 12min - Average sunshine in April:
10h and 30min - Average sunshine in May:
11h and 18min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 30min - Average sunshine in October:
7h and 24min - Average sunshine in November:
6h and 42min - Average sunshine in December:
6h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days
Riverdale Park, CA
- Average sunshine days in January:
24.1 days - Average sunshine days in February:
20.8 days - Average sunshine days in March:
19.6 days - Average sunshine days in April:
21.7 days - Average sunshine days in May:
26.7 days - Average sunshine days in June:
28.4 days
- Average sunshine days in July:
28.3 days - Average sunshine days in August:
29.2 days - Average sunshine days in September:
27.1 days - Average sunshine days in October:
27.7 days - Average sunshine days in November:
24.1 days - Average sunshine days in December:
22 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (19.6 days).
Average UV index
Riverdale Park, CA
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Riverdale Park, CA
The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility
Riverdale Park, 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).
