Granby

Stay up to date with the latest weather conditions in Granby. Below, you will find current data, forecasts, and helpful weather charts.

The climate in Granby is characterized by significant seasonal temperature variations, typical of regions with four distinct seasons. You can expect a cold winter, particularly in January and December, when average temperatures drop well below freezing. Spring brings a gradual warming, transitioning into a moderately warm summer, with the most comfortable temperatures in July and August, when the mercury can reach 23°C. In autumn, temperatures begin to decline again, preparing the city for the next winter season.

One of the most notable features of the weather in Granby is the extremely low level of precipitation throughout the year. On average, only 1-2 mm of precipitation falls monthly. Despite this, the number of days with precipitation can be relatively high, reaching 15 days in March and May. This suggests that precipitation is likely frequent but very light—probably in the form of snow in winter and drizzle or very light rain during the warmer months. Therefore, when planning your trip, you should consider the possibility of cloud cover, though heavy or prolonged rains are unlikely here.

The city of Granby in the USA is characterized by pronounced seasonal temperature fluctuations throughout the year. The coldest months are December and January, when the average temperature stays around -7.6°C to -7.7°C, and nightly lows can drop to -13.5°C (in December) and -12.7°C (in January). The warmest period is in July and August. In July, the average temperature is +15.9°C, and daily highs can reach +23.0°C. August is slightly cooler, with an average temperature of +15.0°C and highs of up to +21.9°C.

The summer months in Granby, from June to August, offer moderately warm weather. Daytime temperatures in July and August often rise above +20°C. However, even in summer, nights can be quite cool. For example, in June, the average minimum temperature is +4.7°C, and in July, it is +8.8°C. This indicates significant daily temperature fluctuations, especially during the summer, when the difference between the daytime high and the nighttime low can exceed 14°C (for example, in July: +23.0°C during the day and +8.8°C at night).

Winter in Granby, covering December, January, and February, is characterized by freezing weather. Average monthly temperatures consistently stay well below zero: -7.7°C in December, -7.6°C in January, and -7.0°C in February. Minimum nighttime temperatures regularly drop to -12°C and lower. Daytime highs in the winter months rarely rise above -2°C. Transitional seasons, such as spring and autumn, also show marked temperature contrasts. For instance, in May, the average temperature is +5.0°C, but it can fluctuate from -1.0°C at night to +11.1°C during the day. In October, the average temperature is +4.7°C, with a range from -1.2°C to +10.5°C.

In Granby, precipitation is distributed fairly evenly throughout the year in terms of total volume. Most months receive about 2 mm of precipitation, with the exception of September, when this figure drops to 1 mm. However, the frequency of precipitation varies noticeably, creating periods with more frequent and less frequent days of precipitation, but without a pronounced rainy or dry season.

The nature of precipitation in Granby depends heavily on the time of year. Winter months, such as January, February, and December, are primarily characterized by snowfall, as average temperatures consistently stay well below freezing (from -7.0°C to -7.7°C). During transition periods, such as March (average temperature -3.4°C, maximum +2.1°C) and November (average temperature -3.8°C, maximum +2.3°C), both snowfall and rain or sleet are possible. From April to October, when average monthly temperatures rise above zero, the main form of precipitation is rain.

In terms of frequency, March and May can be considered the "wettest" months, each averaging 15 days of precipitation. The lowest number of precipitation days is observed in September—only about 8 days. In other months, the number of days with precipitation ranges from 9 (October, November) to 13 (February, April). Thus, although the total amount of precipitation is small, it falls with varying regularity throughout the year.

When planning a trip to Granby, it is important to consider the significant temperature fluctuations throughout the year and the constant possibility of light precipitation. Layering is the key to packing, allowing you to stay comfortable in any weather. Regardless of the season, comfortable waterproof walking shoes will be your best companion, and a light waterproof jacket or compact umbrella will come in handy even in the summer months, as light precipitation (about 2 mm) occurs quite regularly, with the number of rainy or snowy days ranging from 8 to 15 per month.

During the colder months, roughly from November to April, when average temperatures drop significantly below zero (from -7.7°C in December to 0.4°C in April, with night frosts down to -13.5°C), you will need serious insulation. Be sure to pack a warm winter jacket (preferably windproof and waterproof), sweaters or fleece tops, thermal underwear, warm trousers, a hat, scarf, and gloves. Don't forget insulated and waterproof footwear to keep your feet dry and warm while walking through potentially snowy streets.

From May to October, the weather in Granby becomes much warmer, especially in the summer months (June–August), when the average temperature ranges from 12.2°C to 15.9°C, and highs can reach 23°C. During this period, T-shirts, light shirts, shorts, or light trousers will be useful. However, evenings and some days can be cool (especially in May, September, and October, with minimum temperatures around -1°C to 5°C), so don't forget to bring a sweater, cardigan, or light jacket. Sunscreen and a hat will also be useful on clear summer days.