Pasadena, CA weather and climate in 2024
Day
20 °C
Night
6 °C
Sea
15 °C
Precipitation
64 mm
in month
Rainy days
5 days
in month
Daylight
10 hours
average
Sunshine
7 hours
average
Humidity
64 %
Day
20 °C
Night
6 °C
Sea
15 °C
Precipitation
64 mm
in month
Rainy days
5 days
in month
Daylight
10 hours
average
Sunshine
7 hours
average
Humidity
64 %
Overview: Pasadena, CA
Weather charts for Pasadena, CA
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Weather overview for Pasadena, CA
Weather overview
With a Mediterranean climate, Pasadena in California enjoys mild, wetter winters and hot, dry summers. Daytime temperatures typically hover around 20 °C (67 °F) to 32 °C (89 °F), encountered in July and August respectively. Precipitation varies widely through the year, from a mere 1 mm (0.04 in) in July to about 114 mm (4.51 in) in February. The city doesn't grapple with extreme humidity, making outdoor activities pleasant for most of the year. Pasadena offers a seamless blend of sunny skies, with abundant sunshine hours peaking in July.
January weather
Pasadena greets January with cool evenings, averaging 7 °C (44 °F) after dusk, while days are moderately warm at 20 °C (67 °F). Light jackets are commonly worn this month. The skies are often clear, providing approximately 70 hours of sun. Rainfall can be expected with the month seeing around 64 mm (2.53 in) spread over 5 days of rain.
February weather
February sees a slight increase in night-time lows with 8 °C (46 °F) and day temperatures reaching up to 20 °C (68 °F). The rainfall is at its peak during this month, amounting to 114 mm (4.51 in), occurring over 6 days of precipitation. Be prepared for sporadic showers but also enjoy around 71 hours of sun.
March weather
As spring approaches, March has an average minimum temperature of 9 °C (47 °F) during the night and daily highs reaching 21 °C (70 °F). The weather is pleasantly warm during the day, and relatively quiet on the rain front with only 77 mm (3.04 in) of precipitation over 6 days. Plenty of sun will bless the city for around 71 hours.
April weather
April's temperatures are on a steady rise with night averages of 10 °C (50 °F) and daily peaks reaching 23 °C (74 °F). Expect minimal rainy days this month, just about 3 days, as rain becomes less frequent with only 31 mm (1.23 in). Light and layered clothing is recommended due to the diversity in temperature throughout the day.
May weather
By May, the temperatures continue to climb, with evenings at 13 °C (55 °F) and days at an agreeable 25 °C (77 °F). As the dry season takes hold, the rain becomes sparse, registering a mere 9 mm (0.36 in) over 1 day of rainfall. Expect lots of sunshine, with around 66 hours expected. Light and breezy attire is suitable for this month.
June weather
June boasts warm evenings and hot days as summer takes full effect, with temperatures ranging from 15 °C (58 °F) at night to 28 °C (82 °F) during the day. Clear, sunlit skies are common, with around 68 hours of sunlight. The likelihood of rain is incredibly low at 2 mm (0.08 in) across 1 day of precipitation, making it ideal for summer clothing.
July weather
July sizzles with the highest temperatures of the year, averaging 17 °C (62 °F) at night and peaking at 31 °C (88 °F) during the day. Almost zero rains with just 1 mm (0.04 in) falling over barely 0 days. Sun-lovers will appreciate the 82 hours of sunlight. Pack your lightest clothes to enjoy the sweltering heat comfortably.
August weather
August mirrors July's warmth, with similar nighttime temperatures at 17 °C (62 °F) and max daytime temperatures of 32 °C (89 °F). Light rainfall can occasionally occur, totalling around 2 mm (0.09 in) but affecting only 1 day. The plenty of sun with 83 hours make it perfect for continuing those summer outdoor adventures.
September weather
September brings a subtle shift towards cooler weather with 16 °C (60 °F) at night and daytime highs about 30 °C (86 °F). The wet season is still far off, with only 6 mm (0.25 in) of rainfall over 1 day. Light layers may be needed as the evenings start to cool, but the 76 hours of sunshine still promote outside enjoyment.
October weather
In October, autumn is apparent with cooler nights averaging 13 °C (55 °F), yet days are still comfortably warm peaking at 27 °C (80 °F). The frequency of rain slightly increases with 16 mm (0.64 in) over 2 days, but it's typically light and sporadic. With around 73 hours of sun, it's a beautiful month for outdoor recreation and fall festivities.
November weather
November sees the weather cooling further, nights dropping to 9 °C (48 °F) and days around 23 °C (73 °F). As rain becomes more prevalent, expect 39 mm (1.54 in) across 3 days. A more dramatic shift in sunlight happens with only 69 hours, as the days shorten and winter nears.
December weather
December's holiday season comes with chilly evenings, averaging 6 °C (44 °F), while daytime highs cool down to 20 °C (67 °F). With around 69 hours of sun, it's still bright enough to enjoy the festivities outdoors. However, the rain is more present, with 98 mm (3.86 in) falling over 6 days of precipitation.
FAQs
How do temperatures in Pasadena feel in January?
January days in Pasadena are comfortable with high temperatures averaging 20 °C (67 °F), but nights can feel quite chilly, necessitating a cozy sweater or jacket.
Should I expect many rainy days in Pasadena during February?
Yes, you should anticipate a few wet days in Pasadena during February, with the city experiencing its highest amount of rainfall for the year averaging 6 days.
What are the typical daytime temperatures in Pasadena in March?
With daytime temperatures pleasantly averaging around 21 °C (70 °F), March is a great time to enjoy the emerging warmth in Pasadena without the peak summer heat.
Are April days in Pasadena warm enough for t-shirts?
Certainly, with the daytime highs around 23 °C (74 °F), a t-shirt and light layers would suffice for most of April's warm and sunny days in Pasadena.
What can I expect from Pasadena's weather in May?
May in Pasadena is delightful with mild evenings and warm, sunny days, promising great weather for any outdoor event or stroll around the city.
Is June typically the start of the hot season in Pasadena?
Yes, June in Pasadena definitely marks the onset of the hot season with its rising day temperatures, signifying the need for summer attire and sunscreen.
How intense is the heat in Pasadena in July?
July presents the zenith of Pasadena's summer heat, proposing days well-suited for poolside relaxation and beach trips to beat the heat thanks to the soaring temperatures.
Can I expect August in Pasadena to be as hot as July?
Yes, August in Pasadena certainly continues the heat trend with peak summer temperatures matching July's, requiring plenty of hydration and sun protection.
Do temperatures in Pasadena start to cool down in September?
While September marks the beginning of a gradual cooldown, the day temperatures remain high, offering plenty of opportunity to indulge in outdoor fun before the autumn chill sets in.
What's the weather like in Pasadena during October?
October offers a blend of late summer warmth and the onset of autumn, with temperatures adequate for both short sleeves during the day and jackets in the evening.
How cool does it get in Pasadena in November?
November in Pasadena feels noticeably cooler, especially during the nights, indicating the approach of winter and suggesting warmer clothing selections.
What are typical day and night temperatures in Pasadena in December?
December in Pasadena brings colder nights and mild daytime temperatures that are quite a contrast from the scorching summer months, making for a cozy holiday atmosphere.
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.