Climate and monthly weather forecast
Hazelwood, MO

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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 in Hazelwood remains pleasant, making way for several outdoor events in the city. May's arrival in Hazelwood brings a change in high-temperatures, 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). Throughout July, the heat index is calculated 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 in August witnesses an average high-temperature of a moderately hot 85.5°F (29.7°C), indicating a slight variation from July's 86.7°F (30.4°C). 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. The average high-temperature slightly decreases in September, shifting from a moderately hot 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. With the beginning of October, the average high-temperature in Hazelwood shows a decrease, transitioning from a moderately hot 79.7°F (26.5°C) in September 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. A decrease in the average high-temperature is observed in Hazelwood during December, shifting from a cool 53.2°F (11.8°C) in November to a wintry 42.1°F (5.6°C). Weather in December »
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Frequently asked questions

What are the coldest months in Hazelwood?

The coldest period in Hazelwood, Missouri, tends to be January, when average temperatures fluctuate between a high of 37.2°F (2.9°C) and a low of 24.3°F (-4.3°C).

How much does it rain in Hazelwood?

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 in Hazelwood?

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

How much does it snow in Hazelwood?

In Hazelwood, Missouri, during the entire year, snow falls for 21.6 days and aggregates up to 6.73" (171mm) of snow.

What is the month with the least sunshine in Hazelwood?

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 in Hazelwood?

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

What is the driest month in Hazelwood?

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

When does it snow the most in Hazelwood?

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) in Hazelwood?

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?

April through October are months without snowfall in Hazelwood.

What is the most humid month in Hazelwood?

With an average relative humidity of 77%, May is the most humid month.

What is the wettest month in Hazelwood?

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

What are the months with the highest UV index in Hazelwood?

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

When are the longest days in Hazelwood?

The month with the longest days in Hazelwood, Missouri, is June, with an average of 14h and 48min of daylight.

What time of the year is the hottest in Hazelwood?

July, with its high-temperature average of 86.7°F (30.4°C) and a low-temperature average of 68.9°F (20.5°C), is the warmest month in Hazelwood, Missouri.

What month has the most sunshine in Hazelwood?

July has the most sunshine of the year in Hazelwood, with an average of 10.6h of sunshine.

What is the least humid month in Hazelwood?

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

What is the month with the shortest days in Hazelwood?

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

Average temperature
Hazelwood, MO

Average temperature - Hazelwood, MO

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).

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).

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Average pressure
Hazelwood, MO

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).

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Average wind speed
Hazelwood, MO

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).

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Average rainfall
Hazelwood, MO

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").

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Average rainfall days
Hazelwood, MO

Average rainfall days - Hazelwood, MO

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).

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Average snowfall
Hazelwood, MO

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").

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Average snowfall days
Hazelwood, MO

Average snowfall days - Hazelwood, MO

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).

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Average daylight / Average sunshine
Hazelwood, MO

Average daylight / Average sunshine - Hazelwood, MO

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).

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).

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Average sunshine days
Hazelwood, MO

Average sunshine days - Hazelwood, MO

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

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Average UV index
Hazelwood, MO

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).

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Average visibility
Hazelwood, MO

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).

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Hazelwood, Missouri, USA

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