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April Weather in Stamford, United States

Last updated: June 24, 2025

In Stamford, United States, the average temperature in April is a pleasant 18°C (65°F). However, be prepared for a temperature range that can dip to a chilly -1°C (31°F) or soar to a scorching 37°C (99°F). During this month, expect 66 mm (2.6 in) of precipitation spread over about 5 days, and the average humidity hovers around a comfortable 75%.

April Temperature in Stamford

In April in Stamford, the average temperature is 18°C (65°F). Maximum can reach 37°C (99°F), and minimum can be as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling to Stamford during this time.

April Weather in Stamford: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Stamford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stamford, April typically has an average temperature of 18°C (65°F), with highs reaching up to 37°C (99°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec454759657583868578665549
Data source: Temperature data for Stamford generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Stamford

In Stamford in April, the precipitation amount is 66 mm (2.6 in) over a span of 5 days.

April Precipitation Trends in Stamford

The chart displays monthly precipitation patterns in Stamford, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Stamford, April typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec282649667960324487673225
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Stamford

In Stamford in April, humidity is 75%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket that can make outdoor exploration feel a bit stifling, potentially leading to discomfort during travel activities.

April Average Humidity in Stamford

This chart illustrates the average monthly humidity levels in Stamford, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Stamford is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%74%75%80%80%75%67%64%70%82%85%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Stamford

In Stamford in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Stamford.

Maximum UV Index Levels in Stamford for April

The chart shows the monthly maximum UV Index (UVI) for Stamford in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Stamford typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479101112121110864
Data source: Stamford April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How April Weather in Stamford Compares to Other Months

Weather in Stamford varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Stamford, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Stamford, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)28 mm (1.1 inches)77%moderate
February Weather8°C (47°F)26 mm (1.0 inches)76%high
March Weather15°C (60°F)49 mm (1.9 inches)74%very high
April Weather18°C (65°F)66 mm (2.6 inches)75%very high
May Weather24°C (75°F)79 mm (3.1 inches)80%extreme
June Weather28°C (83°F)60 mm (2.4 inches)80%extreme
July Weather30°C (86°F)31 mm (1.2 inches)75%extreme
August Weather29°C (85°F)44 mm (1.7 inches)67%extreme
September Weather26°C (78°F)87 mm (3.4 inches)64%very high
October Weather19°C (66°F)67 mm (2.6 inches)70%very high
November Weather13°C (55°F)32 mm (1.3 inches)82%high
December Weather9°C (49°F)25 mm (1.0 inches)85%moderate

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