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Contents
- The climate of Norwalk
- The best time to visit Norwalk
- The worst time to visit Norwalk
- Spring weather in Norwalk
- Summer weather in Norwalk
- Autumn weather in Norwalk
- Winter weather in Norwalk
- 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
The climate of Norwalk
Perched in beautiful California, USA, the city of Norwalk possesses a mid-latitude steppe climate, otherwise known according to the Köppen climate classification as BSk. Nestled between urban expanses and arid landscapes, the climatic conditions of this city feature only modest fluctuations throughout the year.
Keeping a vigilant eye on the available weather data, there is a general warming trend from the initial 52°F (11.1°C) in January reaching up to 65.7°F (18.7°C) in August for the lowest temperatures, whereas the highest temperatures rise gradually from 66.4°F (19.1°C) in January to a peak of 83.1°F (28.4°C) in August. Humidity levels moderately vary from 51% in November to 66% in June, suggesting relatively dry conditions for most of the year.
Rainfall does not serve as a major climatic influence in Norwalk, with a peak rainfall of 1.46" (37mm) in December and a lean period from June to September with just 0.04 to 0.2" (5mm). Looking at the wind speeds, they range slightly from 4.7mph (7.6km/h) in October to 6.1mph (9.8km/h) in April. The cloud cover according to the given data oscillates between 6% in August to 22% in March and December, indicating moderately clear skies for a significant part of the year.
Keeping a vigilant eye on the available weather data, there is a general warming trend from the initial 52°F (11.1°C) in January reaching up to 65.7°F (18.7°C) in August for the lowest temperatures, whereas the highest temperatures rise gradually from 66.4°F (19.1°C) in January to a peak of 83.1°F (28.4°C) in August. Humidity levels moderately vary from 51% in November to 66% in June, suggesting relatively dry conditions for most of the year.
Rainfall does not serve as a major climatic influence in Norwalk, with a peak rainfall of 1.46" (37mm) in December and a lean period from June to September with just 0.04 to 0.2" (5mm). Looking at the wind speeds, they range slightly from 4.7mph (7.6km/h) in October to 6.1mph (9.8km/h) in April. The cloud cover according to the given data oscillates between 6% in August to 22% in March and December, indicating moderately clear skies for a significant part of the year.
The best time to visit Norwalk
Considered the golden period for visitors, August is the most favorable time to soak in the beauty of Norwalk. This month combines the warm temperatures ranging from 65.7°F (18.7°C) to 83.1°F (28.4°C) with the lowest cloud coverage at 6%. The relative humidity stands at a comfortable 60% while rainfall is at a minimum, a mere 0.16" (4mm). Furthermore, daylight extends for 13.4 hours during the day, offering ample time for sightseeing and outdoor activities
The worst time to visit Norwalk
Despite its relatively mild climate, January and February can be a little challenging for visitors due to the cooler temperatures ranging from 50.5°F (10.3°C) to 66.4°F (19.1°C) and an increased rainfall of 1.22 to 1.38" (35mm) respectively. Notably, January also witnesses fewer daylight hours i.e., 10.2 hours, which might limit outdoor activities.
Spring weather in Norwalk
A period of gradual warming, Spring in Norwalk commences with temperatures ranging from 52.3°F (11.3°C) to 68°F (20°C) in March and culminates with 57°F (13.9°C) to 72.5°F (22.5°C) in May. Although rainfall sees a dip during this season, dropping from 0.91" (23mm) in March to 0.2" (5mm) in May, the humidity levels tend to rise from 60% to 63%.
Summer weather in Norwalk
Summers in Norwalk are known for their warm and dry conditions. The temperature during this season varies from 59.5°F (15.3°C) in June to a peak of 65.7°F (18.7°C) in August for the lowest temperatures, while the highest temperatures follow a similar pattern, ranging from 76.6°F (24.8°C) to 83.1°F (28.4°C). Rainfall remains scarce, fluctuating between 0.04 to 0.2" (5mm) throughout the summer months.
Autumn weather in Norwalk
Autumn in Norwalk is marked by a gradual drop in temperature from 64.9°F (18.3°C) to 56.3°F (13.5°C) for the lowest and from 77.7°F (25.4°C) to 71.6°F (22°C) for the highest temperatures. Yet again, the city remains relatively dry with rainfall barely touching 0.67" (17mm) in November from 0.24" (6mm) in September.
Winter weather in Norwalk
Winter in Norwalk witnesses a steady decline in temperature, setting in with 51.1°F (10.6°C) in December and dropping to 52°F (11.1°C) by the end of February for the lowest temperatures, while the highest temperatures trend from 64.6°F (18.1°C) to 65.7°F (18.7°C). Correspondingly, this season records the highest rainfall of up to 1.46" (37mm) in December, dipping to 1.22" (31mm) in February.
Weather in January
January in Norwalk, California, experiences somewhat mild temperatures, with the start of the year providing cooler air and moderate humidity. The weather contrasts slightly from the upcoming months by having average high temperatures of 66.4°F (19.1°C), establishing it as the coldest month of the year. Weather in January »
Weather in February
February continues to reflect the winter season in Norwalk, with temperatures and weather conditions similar to January. The lowest temperature gets down to 50.5°F (10.3°C), confirming that winter still maintains a hold over the region. Weather in February »
Weather in March
March signals the transition into spring in Norwalk, with an evident increase in temperature and daylight hours. With temperatures climbing up to an average high of 68°F (20°C), it is clear that winter's chill is receding. Rainfall persists, but the frequency of rainy days is quite minimal, indicating a comparatively dryer period. Weather in March »
Weather in April
April further enhances the springtime ambiance in Norwalk, with a significant drop in rainfall to just 0.43" (11mm) throughout the month. The strikingly decreased rainfall from March to April, results in drier days, encouraging more outdoor activities. Weather in April »
Weather in May
Weather in May stays consistent with the pleasantness of spring, with a continued rise in temperature and more daylight hours. The highest average temperature in May soars to 72.5°F (22.5°C), a marked increase from April, signaling that summer is approaching. Weather in May »
Weather in June
As summer sets in Norwalk, June portrays a distinct shift in temperatures, daylight, and weather patterns. The average high temperature hovers around 76.6°F (24.8°C), the first substantial soaring heat of the summer season. This rise in temperature is complemented by longer daylight hours and increased visibility. Weather in June »
Weather in July
July exhibits true summer weather in Norwalk, with temperatures hitting an annual high of 81.5°F (27.5°C). Despite this spike, the region typically sees less cloud cover and lower relative humidity compared to the rest of the year. Weather in July »
Weather in August
Weather patterns in August maintain the heat and humidity that define the summer season in Norwalk. August sees the highest temperature of the year, averaging around 83.1°F (28.4°C), confirming its reputation as the hottest month. Weather in August »
Weather in September
September marks the advent of fall in Norwalk, with temperatures beginning to recede from the summer's peak. The average high temperature dips to 82.2°F (27.9°C), a slight decrease from August, indicating the start of the transitional period to winter. Weather in September »
Weather in October
In Norwalk, October showcases more evidence of the impending winter with increasing instances of lower temperatures. The climatological shift becomes evident as the average high temperature dips to 77.7°F (25.4°C), notably lower than in September. Weather in October »
Weather in November
November in Norwalk is a precursor to winter, presenting cooler temperatures and slightly more rainfall. The descent into colder months is marked by an average low temperature of 56.3°F (13.5°C), a significant drop from October. Weather in November »
Weather in December
December completes the annual weather cycle in Norwalk, reverting to colder temperatures typical of the winter season. An average high of no more than 64.6°F (18.1°C) coupled with increased rainfall of 1.46" (37mm) highlights the return of the colder months. 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
How many days does it rain?
In Norwalk, during the entire year, the rain falls for 49.5 days and collects up to 7.05" (179mm) of precipitation.
What are the months with the lowest UV index?
February, November and December, with an average maximum UV index of 4, are months with the lowest UV index.
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 66%.
What is the driest month?
The month with the least rainfall is June, when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.
When are the longest days?
With an average of 14h and 24min of daylight, June has the longest days of the year.
What are the months with the highest UV index?
June through September, with an average maximum UV index of 6, are months with the highest UV index.
What are the months with the most sunshine?
The months with the most sunshine are July and August, with an average of 12h of sunshine.
What month is the hottest?
August, with its high-temperature average of 83.1°F (28.4°C) and a low-temperature average of 65.7°F (18.7°C), is the warmest month.
What is the least humid month?
The least humid month in Norwalk is November, with an average relative humidity of 51%.
What are the coldest months?
December is the month when Norwalk experiences its coldest temperatures, averaging a high of 64.6°F (18.1°C) and a low of 51.1°F (10.6°C).
What is the rainiest month?
The month with the most rainfall is December, when the rain falls for 6.1 days and typically aggregates up to 1.46" (37mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days in Norwalk is December, with an average of 9h and 54min of daylight.
What is the month with the least sunshine?
December has the least sunshine of the year in Norwalk, with an average of 6.7h of sunshine.
Average temperature
Norwalk, CA
The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (64.6°F).
The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (50.5°F).
Average pressure
Norwalk, 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:
29.97"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.9"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 months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed
Norwalk, CA
- Average wind speed in January:
5.3mph - Average wind speed in February:
5.3mph - Average wind speed in March:
5.5mph - Average wind speed in April:
6.1mph - Average wind speed in May:
5.9mph - Average wind speed in June:
5.3mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
4.9mph - Average wind speed in September:
4.8mph - Average wind speed in October:
4.7mph - Average wind speed in November:
5.1mph - Average wind speed in December:
5.3mph
The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is October (4.7mph).
Average humidity
Norwalk, CA
The month with the highest relative humidity is June (66%).
The month with the lowest relative humidity is November (51%).
Average rainfall
Norwalk, CA
- Average rainfall in January:
1.22" - Average rainfall in February:
1.38" - Average rainfall in March:
0.91" - Average rainfall in April:
0.43" - Average rainfall in May:
0.2" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.2" - Average rainfall in August:
0.16" - Average rainfall in September:
0.16" - Average rainfall in October:
0.24" - Average rainfall in November:
0.67" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is December (1.46").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Norwalk, CA
- Average rainfall days in January:
4.7 days - Average rainfall days in February:
5.6 days - Average rainfall days in March:
7.1 days - Average rainfall days in April:
4.8 days - Average rainfall days in May:
3.6 days - Average rainfall days in June:
1.2 days
- Average rainfall days in July:
3.6 days - Average rainfall days in August:
2.1 days - Average rainfall days in September:
3 days - Average rainfall days in October:
3.5 days - Average rainfall days in November:
4.2 days - Average rainfall days in December:
6.1 days
The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.2 days).
Average daylight / Average sunshine
Norwalk, 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 4min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 4min - Average sunshine in October:
8h and 3min - Average sunshine in November:
7h and 1min - Average sunshine in December:
6h and 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days
Norwalk, CA
- Average sunshine days in January:
25.6 days - Average sunshine days in February:
21.1 days - Average sunshine days in March:
22.9 days - Average sunshine days in April:
23.8 days - Average sunshine days in May:
23.8 days - Average sunshine days in June:
23.3 days
- Average sunshine days in July:
25.1 days - Average sunshine days in August:
25.6 days - Average sunshine days in September:
23.5 days - Average sunshine days in October:
25.3 days - Average sunshine days in November:
24.3 days - Average sunshine days in December:
23.4 days
The months with the most sunshine days are January and August (25.6 days).
The month with the least sunshine days is February (21.1 days).
Average UV index
Norwalk, CA
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are February, November and December (UV index 4).
Average cloud cover
Norwalk, 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 6).
Average visibility
Norwalk, 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).
Norwalk, California, USA
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