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January Weather in Grono, Switzerland

Last updated: August 27, 2025

In January, the average temperature in Grono, Switzerland hovers around -2°C (28°F), with a minimum plummeting to -19°C (-1°F) and a potential maximum rise to 8°C (47°F). Expect about 52 mm (2.0 in) of precipitation spread over 9 days, contributing to a notably high average humidity of 92%.

January Temperature in Grono

In January in Grono, the average temperature is -2°C (28°F). The maximum can reach 8°C (47°F), while the minimum can be as low as -19°C (-1°F). Travelers should be prepared for a range of cold temperatures and pack appropriate winter clothing when visiting during this time.

January Weather in Grono: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Grono, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grono, January typically has an average temperature of -2°C (28°F), with highs reaching up to 8°C (47°F) and lows dropping to around -19°C (-1°F).
JanFebMarAprMayJunJulAugSepOctNovDec283337445160636255473730
Data source: Temperature data for Grono 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.

January Precipitation in Grono

In Grono in January, the precipitation amount is 52 mm (2.0 in) over a span of 9 days.

January Precipitation Trends in Grono

The chart displays monthly precipitation patterns in Grono, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Grono, January typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec52508511415113192135113166139108
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Grono

In Grono in January humidity is 92%. With an average temperature of -2°C (28°F), this humidity feels like a biting chill that penetrates layers of clothing, making outdoor activities uncomfortable and travel quite challenging.

January Average Humidity in Grono

This chart illustrates the average monthly humidity levels in Grono, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Grono is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%89%87%84%80%82%83%80%83%90%89%90%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Grono

In Grono in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Grono, you can visit Hourly UV Index in Grono.

Maximum UV Index Levels in Grono for January

The chart shows the monthly maximum UV Index (UVI) for Grono in January, 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 January, the maximum UV index in Grono typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101097532
Data source: Grono January 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 January Weather in Grono Compares to Other Months

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

This table compares monthly weather conditions in Grono, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)52 mm (2.0 inches)92%low
February Weather0°C (33°F)50 mm (2.0 inches)89%moderate
March Weather3°C (37°F)85 mm (3.3 inches)87%high
April Weather7°C (44°F)114 mm (4.5 inches)84%very high
May Weather10°C (51°F)151 mm (6.0 inches)80%very high
June Weather15°C (60°F)131 mm (5.2 inches)82%very high
July Weather17°C (63°F)92 mm (3.6 inches)83%very high
August Weather17°C (62°F)135 mm (5.3 inches)80%very high
September Weather13°C (55°F)113 mm (4.4 inches)83%high
October Weather8°C (47°F)166 mm (6.5 inches)90%moderate
November Weather3°C (38°F)139 mm (5.5 inches)88%moderate
December Weather-1°C (30°F)108 mm (4.2 inches)90%low

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