April weather forecast
Hannibal, MO

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The stunning Mark Twain Memorial Lighthouse stands tall in white among the surrounding rocks and greenery in Hannibal, Missouri
The stunning Mark Twain Memorial Lighthouse stands tall in white among the surrounding rocks and greenery in Hannibal, Missouri

Weather in April

April in Hannibal continues the trend of spring, reflected by increased temperatures and more rainfall. The city sees an end to snowfall, indicating a clear departure from winter. The blend of adequate rainfall, longer daylight hours, and emerging warmth fosters the blooming of native flora. Among the climatic variables, rainfall sees an increase to 2.6" (66mm) in April. This transition phase in Hannibal creates a weather pattern that is attractive and well-suited for outdoor activities.

Temperature

The shift into April brings an increase in the average high-temperature, moving from a cool 51.6°F (10.9°C) in March to a comfortable 63.5°F (17.5°C). Hannibal, in April, experiences an average temperature of 45.5°F (7.5°C) at night.

Humidity

In Hannibal, Missouri, the average relative humidity in April is 75%.

Rainfall

In Hannibal, Missouri, during April, the rain falls for 14.8 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Hannibal, during the entire year, the rain falls for 136 days and collects up to 25" (635mm) of precipitation.

Snowfall

Months with snowfall in Hannibal are January through April, November and December. April is the last month it regularly snows in Hannibal. During 0.6 snowfall days, in April, Hannibal aggregates 0.08" (2mm) of snow. Throughout the year, there are 20 snowfall days, and 8.5" (216mm) of snow is accumulated.

Daylight

In April, the average length of the day in Hannibal is 13h and 17min.
On the first day of April in Hannibal, sunrise is at 6:48 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 7:59 pm CDT.

Sunshine

In Hannibal, the average sunshine in April is 8.3h.

UV index

In April, the average daily maximum UV index in Hannibal is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index, 4 in April, converts into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Frequently asked questions

What is the average April temperature in Hannibal?

Hannibal in April has an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 45.5°F (7.5°C).

What is the average humidity in April in Hannibal?

In Hannibal, Missouri, the average relative humidity in April is 75%.

How much does it rain in Hannibal in April?

In Hannibal, during April, the rain falls for 14.8 days and regularly aggregates up to 2.6" (66mm) of precipitation.

What is the last month it snows in Hannibal?

April is the last month it regularly snows. During 0.6 snowfall days, in April, Hannibal aggregates 0.08" (2mm) of snow.

How many hours of daylight does Hannibal have in April?

In April, the average day length in Hannibal is 13h and 17min.

When is the sunrise / sunset in April in Hannibal?

On the first day of April in Hannibal, Missouri, sunrise is at 6:48 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 7:59 pm CDT.

How long on average sun shines in April in Hannibal?

The average sunshine duration in April in Hannibal is 8.3h.

What is the UV index reading in April in Hannibal?

In Hannibal, Missouri, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Hannibal, MO

Average temperature in April - Hannibal, MO
  • Average high temperature in April: 63.5°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in April: 45.5°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in April
Hannibal, MO

Average pressure in April - Hannibal, MO
  • Average pressure in April: 29.93"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).

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Average wind speed in April
Hannibal, MO

Average wind speed in April - Hannibal, MO
  • Average wind speed in April: 9.9mph

The windiest months (with the highest average wind speed) are January, February and April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

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Average humidity in April
Hannibal, MO

Average humidity in April - Hannibal, MO
  • Average humidity in April: 75%

The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in April
Hannibal, MO

Average rainfall in April - Hannibal, MO
  • Average rainfall in April: 2.6"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is January (1.14").

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Average rainfall days in April
Hannibal, MO

Average rainfall days in April - Hannibal, MO
  • Average rainfall days in April: 14.8 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall in April
Hannibal, MO

Average snowfall in April - Hannibal, MO
  • Average snowfall in April: 0.08"

The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in April
Hannibal, MO

Average snowfall days in April - Hannibal, MO
  • Average snowfall days in April: 0.6 days

The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Hannibal, MO

Average daylight in April / Average sunshine in April - Hannibal, MO
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in April: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in April
Hannibal, MO

Average sunshine days in April - Hannibal, MO
  • Average sunshine days in April: 13.4 days

The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is June (11.6 days).

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Average UV index in April
Hannibal, MO

Average UV index in April - Hannibal, MO
  • Average UV index in April: 4

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

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Average cloud cover in April
Hannibal, MO

Average cloud cover in April - Hannibal, MO
  • Average cloud cover in April: 42

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in April
Hannibal, MO

Average visibility in April - Hannibal, MO
  • Average visibility in April: 6mi

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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Hannibal, Missouri, USA

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