Yearly & Monthly weather

The climate of Hazelwood
The best time to visit Hazelwood
The worst time to visit Hazelwood
Spring weather in Hazelwood
Summer weather in Hazelwood
Autumn weather in Hazelwood
Winter weather in Hazelwood
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 snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

The climate of Hazelwood

Hazelwood, located in Missouri, USA, is categorized under the Köppen climate classification as a humid subtropical zone with no dry season. Throughout the year, the city experiences significant variances in climatic elements with temperatures ranging from lows around 24.3°F (-4.3°C) in January to highs touching 86.7°F (30.4°C) in July. July is also regarded as the most humid month with a relative humidity of 76%.

A notable pattern in Hazelwood's climatic elements is the amount of rainfall the city receives. From January to December, rainfall ranges from 1.42" (36mm) to 3.31" (84mm) with May witnessing the maximum precipitation. Snowfall in the city is another distinguishing feature, happening between January to March and again in November and December, ranging from 0.51" (13mm) to 2.05" (52mm).

A continuous shift in daylight hours is also observed across the year, with the longest daytime duration of 14.9 hours occurring in June, and the shortest daylight of 9.5 hours in December. Equally, the amount of sunshine Hazelwood gets fluctuates, reaching a peak of 10.6 hours per day in July and dropping to a low point of 4.6 hours per day in January.

The best time to visit Hazelwood

For visitors planning a trip to Hazelwood, the months from May to September provide appropriate weather conditions for outdoor activities. Average high temperatures in these months range from 74.8°F (23.8°C) to 86.7°F (30.4°C), while the average low temperatures still remain pleasant enough, falling between 57.6°F (14.2°C) to 68.9°F (20.5°C). Furthermore, these months also register the highest daylight with an average above 13.6 hours, enabling visitors to enjoy extended outdoor experiences.

The worst time to visit Hazelwood

Travelers may want to avoid the months of January and February. Despite the unique beauty of Hazelwood in winter, the biting cold characterized by an average low temperature of 24.3°F (-4.3°C) in January and 27.5°F (-2.5°C) in February, coupled with the limited daylight hours falling to 9.8 hours in January and 10.8 hours in February, may pose challenges to outdoor plans. Snowfall during these months can exert a limiting effect on travel and outdoor activities as well.

Spring weather in Hazelwood

Spring in Hazelwood begins in March and lasts till May. March sees a significant rise in temperature with average highs reaching 54.1°F (12.3°C) and lows touching 37.9°F (3.3°C). However, there is a noticeable jump in temperature by May with average highs reaching 74.8°F (23.8°C) and lows settling at 57.6°F (14.2°C). Rainfall tends to increase during this period, peaking at 3.31" (84mm) in May.

Summer weather in Hazelwood

Coming to the summer season, from June to August, conditions are warm with average high temperatures fluctuating from 84.2°F (29°C) to 86.7°F (30.4°C) and average low temperatures staying between 66.7°F (19.3°C) to 68.9°F (20.5°C). These months witness longer periods of daylight, surpassing 14 hours per day, allowing ample sunlight for enjoyment.

Autumn weather in Hazelwood

Autumn truly comes to Hazelwood in September and lasts till November, with temperatures taking a gentle dip. In November, temperature lows reach 37.9°F (3.3°C) while highs stand at 53.2°F (11.8°C). Rainfall lowers significantly by November, standing at 1.61" (41mm), providing largely dry days.

Winter weather in Hazelwood

Winter in Hazelwood spans from December to February. The city dawns a frosty look in December with high temperatures averaging at 42.1°F (5.6°C) and lows dropping to 30°F (-1.1°C). Also, the city witnesses the most prominent snowfall during January with about 2.05" (52mm). With daylight hours at their lowest point of the year, the city sees a decrease in outdoor activities. Weather during these months tends to be cold and frosty, with crisp winds averaging 8.6mph (13.8km/h) in December and 9.1mph (14.6km/h) in February.

Weather in January

January in Hazelwood, Missouri ushers in the frigid charm of winter. Temperatures take a dip, with highs of 37.2°F (2.9°C) and lows reaching 24.3°F (-4.3°C). The month is characterized by a considerable cloud cover, as well as significant snowfall. Weather in January »

Weather in February

While February continues the winter streak of January, it brings with it slightly warmer temperatures. The Hazelwood weather becomes more comfortable, despite the additional snowfall of 2.05" (52mm). The daylight increases to an average of 10.8 hours per day, providing residents with more time to engage in outdoor activities. Weather in February »

Weather in March

March announces the advent of Spring in Hazelwood with average temperatures rising significantly to a high of 54.1°F (12.3°C) and low of 37.9°F (3.3°C). The city brightens up as the snow retreats and rainfall increases to nearly 1.97" (50mm). Weather in March »

Weather in April

April is characterized by further escalation in temperatures, marking a complete transition from the chills of winter to the freshness of spring. The highest precipitation for the year is recorded in this month, amounting to 3.19" (81mm). Weather in April »

Weather in May

May typically sees the advent of summer, elevating average temperatures as high as 74.8°F (23.8°C) and as low as 57.6°F (14.2°C). With rainfall of around 3.31" (84mm), May is the month with the maximum rainfall. Despite the warmer temperatures, the weather remains pleasant, making way for several outdoor events in the city. As May begins, there is an increase in the average high-temperature, moving from an enjoyable 65.3°F (18.5°C) in April to a warm 74.8°F (23.8°C). Weather in May »

Weather in June

June marks the start of summer in full swing. It brings with it high humidity levels and longer daylight hours as compared to the preceding month. The absence of snowfall and the onset of warm winds increase the overall feel of heat. Weather in June »

Weather in July

July is noticeably the warmest month in Hazelwood, with temperatures peaking at 86.7°F (30.4°C). Hazelwood's weather in July is characterized by high humidity levels, prominent sunshine hours, and the absence of snowfall. Despite the heat, the city buzzes with summer activities and nightlife. In Hazelwood, July records the highest average temperatures, peaking at 86.7°F (30.4°C) and reaching a low of 68.9°F (20.5°C). The heat index value for July is computed to be a very hot 100.4°F (38°C). Weather in July »

Weather in August

August, while still being warm, gives the first signs of an upcoming fall, as the temperature slightly drops to a high of 85.5°F (29.7°C). Despite being one of the warmest months, it comes with decreased daylight hours. While the city still basks under the summer sun, evenings begin to get cooler, indicative of the approaching fall season. Hazelwood records an average high-temperature of a moderately hot 85.5°F (29.7°C) in August, closely mirroring the climate of the previous month. Weather in August »

Weather in September

September officially ushers in autumn in Hazelwood, Missouri. With temperatures dropping to a high of 79.7°F (26.5°C), autumnal hues start to take over the city. Although the weather remains warm, the decrease in humidity and normalization of wind speeds signify the retreat of the scorching summer months. In Hazelwood, the average high-temperature in September slightly decreases from 85.5°F (29.7°C) in August to a still warm 79.7°F (26.5°C). Weather in September »

Weather in October

October in Hazelwood witnesses the peak of Autumn. The landscape is covered with vibrant fall colors, complemented by a dip in temperature. Patchy rain showers and lower humidity levels are common, while warm drinks and cozy sweaters become a necessity. The arrival of October corresponds with a reduction in the average high-temperature, down from September's moderately hot 79.7°F (26.5°C) to an enjoyable 66°F (18.9°C). Weather in October »

Weather in November

November is indicative of the looming winter with a further plunge in temperature and the start of light snowfall of around 0.51" (13mm). While the chilly breeze and shorter days mark the onset of winter, remaining fall colors provide a spectacular sight. Weather in November »

Weather in December

December finally ushers in winter with temperatures falling to a low of 30°F (-1.1°C). Snowfall increases significantly to 1.81" (46mm) and daylight hours are the shortest in the year. Gloved hands, warm clothes, and hot drinks appear to be the city’s winter staples, while it dresses in holiday decorations to celebrate the festive season. December's onset corresponds with a shift in the average high-temperature, moving from a cool 53.2°F (11.8°C) in November to a cold 42.1°F (5.6°C). Weather in December »

Updated: Jul 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Hazelwood?

January, known for its average high temperature of 37.2°F (2.9°C) and an average low temperature of 24.3°F (-4.3°C), is the coldest month.

How many days does it rain?

In Hazelwood, during the entire year, the rain falls for 141.9 days and collects up to 27.68" (703mm) of precipitation.

When does it snow?

Months with snowfall are January through March, November and December.

How many days does it snow?

Throughout the year, there are 21.6 snowfall days, and 6.73" (171mm) of snow is accumulated.

What is the month with the least sunshine?

With an average of 4.6h of sunshine, January has the least sunshine of the year.

What is the month with the lowest UV index?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.

What is the driest month?

February is the month with the least rainfall in Hazelwood. Rain falls for 7.3 days and accumulates 1.42" (36mm) of precipitation.

When does it snow the most?

February is the month with the most snowfall. Snow falls for 6.2 days and accumulates 2.05" (52mm) of snow.

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 CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

When it does not snow?

In Hazelwood, Missouri, snow does not fall in April through October.

What is the most humid month?

The most humid month is May, with an average relative humidity of 77%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 16 days and accumulates 3.31" (84mm) of precipitation.

What is the month with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Hazelwood.

When are the longest days?

June has the longest days of the year, with an average of 14h and 48min of daylight.

What time of the year is the hottest?

Hazelwood's warmest weather arrives in July, when temperatures average a high of 86.7°F (30.4°C) and a low of 68.9°F (20.5°C).

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.6h of sunshine.

What is the least humid month?

The least humid month is October, with an average relative humidity of 70%.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

Average temperature
Hazelwood, MO

Average high temperature in January:
37.2°F
Average high temperature in February:
42.1°F
Average high temperature in March:
54.1°F
Average high temperature in April:
65.3°F
Average high temperature in May:
74.8°F
Average high temperature in June:
84.2°F

Average high temperature in July:
86.7°F
Average high temperature in August:
85.5°F
Average high temperature in September:
79.7°F
Average high temperature in October:
66°F
Average high temperature in November:
53.2°F
Average high temperature in December:
42.1°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (37.2°F).

Average low temperature in January:
24.3°F
Average low temperature in February:
27.5°F
Average low temperature in March:
37.9°F
Average low temperature in April:
48°F
Average low temperature in May:
57.6°F
Average low temperature in June:
66.7°F

Average low temperature in July:
68.9°F
Average low temperature in August:
67.1°F
Average low temperature in September:
60.1°F
Average low temperature in October:
49.5°F
Average low temperature in November:
37.9°F
Average low temperature in December:
30°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure
Hazelwood, MO

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed
Hazelwood, MO

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

Average humidity
Hazelwood, MO

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (70%).

Average rainfall
Hazelwood, MO

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is February (1.42").

Average rainfall days
Hazelwood, MO

Average rainfall days in January:
7.8 days
Average rainfall days in February:
7.3 days
Average rainfall days in March:
12.9 days
Average rainfall days in April:
14.8 days
Average rainfall days in May:
16 days
Average rainfall days in June:
14.8 days

Average rainfall days in July:
16.3 days
Average rainfall days in August:
13.2 days
Average rainfall days in September:
12.3 days
Average rainfall days in October:
10.3 days
Average rainfall days in November:
8.9 days
Average rainfall days in December:
7.3 days

The month with the highest number of rainy days is July (16.3 days).
The months with the least rainy days are February and December (7.3 days).

Average snowfall
Hazelwood, MO

The month with the highest snowfall is February (2.05").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Hazelwood, MO

Average snowfall days in January:
6.8 days
Average snowfall days in February:
6.2 days
Average snowfall days in March:
2.4 days
Average snowfall days in April:
0.2 days
Average snowfall days in May:
0 days
Average snowfall days in June:
0 days

Average snowfall days in July:
0 days
Average snowfall days in August:
0 days
Average snowfall days in September:
0 days
Average snowfall days in October:
0.1 days
Average snowfall days in November:
1.5 days
Average snowfall days in December:
4.4 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Hazelwood, MO

Average daylight in January:
9h and 5min
Average daylight in February:
10h and 5min
Average daylight in March:
12h and 0min
Average daylight in April:
13h and 1min
Average daylight in May:
14h and 2min
Average daylight in June:
14h and 5min

Average daylight in July:
14h and 4min
Average daylight in August:
13h and 4min
Average daylight in September:
12h and 2min
Average daylight in October:
11h and 1min
Average daylight in November:
10h and 1min
Average daylight in December:
9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

Average sunshine in January:
4h and 4min
Average sunshine in February:
4h and 4min
Average sunshine in March:
6h and 3min
Average sunshine in April:
8h and 4min
Average sunshine in May:
9h and 3min
Average sunshine in June:
10h and 3min

Average sunshine in July:
10h and 4min
Average sunshine in August:
10h and 2min
Average sunshine in September:
9h and 4min
Average sunshine in October:
6h and 1min
Average sunshine in November:
5h and 3min
Average sunshine in December:
4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days
Hazelwood, MO

Average sunshine days in January:
18.7 days
Average sunshine days in February:
14.7 days
Average sunshine days in March:
14.4 days
Average sunshine days in April:
13.2 days
Average sunshine days in May:
12.1 days
Average sunshine days in June:
11.8 days

Average sunshine days in July:
11.4 days
Average sunshine days in August:
13.4 days
Average sunshine days in September:
15.3 days
Average sunshine days in October:
19.2 days
Average sunshine days in November:
18.2 days
Average sunshine days in December:
18.8 days

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (11.4 days).

Average UV index
Hazelwood, MO

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover
Hazelwood, MO

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility
Hazelwood, MO

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).

Climate and monthly weather forecastHazelwood, MO

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