Climate and monthly weather forecastMerrillan, WI

The climate of Merrillan

Merrillan, settled in Wisconsin, USA, conforms to the Dfb categorization under the Köppen climate classification. This is indicative of bearing a humid continental climate, where the summer season tends to be warm, and there exists no identifiable dry period. For consistency and depth in understanding, the climate data interpreted pertains to average monthly observations.

A year in Merrillan is marked by considerable variation in temperatures, with the coldest reading in the range of 7.3°F (-13.7°C) to 15.4°F (-9.2°C) typically noticed in the first quarter, whilst the hottest temperature fluctuates from 73.8°F (23.2°C) to 78.6°F (25.9°C) during the summer. Humidity levels maintain a relative consistency, with the least dampness felt in the months transitioning from winter to spring, where the proportion falls to 77%. Then, it ascends to remain between 80% and 90% for the rest of the year. The onset of spring also brings along the near-continuous rainfall that persists until late autumn, with recorded measurements diversifying from 1.54" (39mm) to 2.91" (74mm) on average.

Merrillan witnesses relatively more snowfall than other climatic zones of the same category, with the maximum observed in the extremities of the year, at the measurements of 2.8 to 2.83" (72mm). The behavior of cloud cover follows a similar pattern to snowfall, increasing during winters, before thinning out during the summer months.

The best time to visit Merrillan

When the objective of the visit is to enjoy mild weather and extended daylight, one would be well advised to plan a trip to Merrillan between late spring and early fall. In particular, from May to August the average high temperature reigns between 64.9°F (18.3°C) to 77°F (25°C), coupled with an increased daylight duration of 14.5 to 15.5 hours a day on an average. The UV index also optimizes at an average of 5, enabling optimal conditions for outdoor activities.

The worst time to visit Merrillan

Rescheduling a visit from December through February could be considered due to the frigid weather conditions, with temperatures dropping as low as 7.3°F (-13.7°C) to 15.4°F (-9.2°C). One must also consider that these months have the shortest daylight period, averaging between 8.9 to 9.6 hours, and experiences greater cloud coverage which hovers close to 69%.

Spring weather in Merrillan

Spring in Merrillan is characterized by a steady rise in temperature, transitioning from an average low of 24.8°F (-4°C) in March to a warmer 46.9°F (8.3°C) by May. Warmer weather is accompanied by increasing daylight from 12 hours in March to 14.8 hours in May. Despite the warming weather, rainfall is on the rise, increasing from 0.91" (23mm) to 2.13" (54mm) from March to May.

Summer weather in Merrillan

July is generally the peak of summer in Merrillan, with average high temperatures soaring to 78.6°F (25.9°C), yet the nights cool down to a comfortable average of 60.1°F (15.6°C). With extended daylight averaging 15.1 to 15.5 hours and less cloud coverage, Merrillan's summer makes it ideal for outdoor explorations. That said, rainfall is highest during summer, with levels peaking at 2.91" (74mm) in June before gradually descending.

Autumn weather in Merrillan

Autumn in Merrillan witnesses an average high temperature decline from 70.3°F (21.3°C) in September to 40.6°F (4.8°C) by November. Daylight hours, too, shrink from an average of 12.5 hours in September to 9.6 hours in November. As fall progresses, the average rainfall decreases to 0.63" (16mm) marking November as the driest month.

Winter weather in Merrillan

Winter in Merrillan is characterized by cold temperatures, shorter daylight hours, and increasing snowfall. By December, temperatures dip to an average low of 15.4°F (-9.2°C), and daylight averages at a brief 8.9 hours. Snowfall also increases, reaching 2.83" (72mm) on average by the end of the year. Despite the bitter cold, one might find the snow-clad landscape of Merrillan, particularly charming.

Weather in January

Low temperatures are a characteristic trait in January in Merrillan, Wisconsin, with mercury columns sometimes dipping as low as 7.3°F (-13.7°C). The winter chill results in a high relative humidity, reaching 91%, the highest in the year. Weather in January »

Weather in February

The frigid temps persist into February, though a slight increase in mercury readings is observed. Days remain mostly overcast with a significant percentage of cloud cover. Rainfall goes up a notch when compared to the prior month, indicating the beginning of the spring transition. Weather in February »

Weather in March

March marks a shift in Merrillan's weather, as winter begins to relent, and noticeable warming takes place. The temperature swings between 24.8°F (-4°C) and 39.4°F (4.1°C), presenting a much-needed respite from the extreme cold of the past months. Weather in March »

Weather in April

April in Merrillan, Wisconsin brings conditions more conducive to outdoor activities as the spring advances. The temperature range widens, making it substantially warmer with an up to 51.8°F (11°C) recorded. The rainfall increases significantly, clocking in 1.54" (39mm), heralding the onset of the wetter seasons. Weather in April »

Weather in May

The warmer weather solidifies in May, as temperatures climb toward peak values. Rainfall continues to increase, making this the rainiest period until now. The prolonged daylight hours of up to 14.8 hours and increased sunshine brighten up the town. Weather in May »

Weather in June

June ushers in the summer season, with an average peak temperature of 73.8°F (23.2°C), indicative of the climbing mercury. This is also the time when longer daylight hours are witnessed, reaching up to 15.5 hours. There is an increased chance of more sunny days, and the humidity begins to rise again. Weather in June »

Weather in July

July typically stands out as the hottest month in Merrillan, Wisconsin, reaching up to a scorching 78.6°F (25.9°C). However, it also means a dip in rainfall, but not substantial enough to deter outdoor activities. The increase in temperature is matched with longer sunshine hours, reaching a peak of 12.6 days with sun. Weather in July »

Weather in August

As Wisconsin reaches the tail end of summer, August's weather records mild fluctuations from the previous month. The warm temperatures continue, but with an average high slightly lower than July's peak. Rainfall sees a slight upturn, yet it remains lower than the earlier wetter months. Weather in August »

Weather in September

With the arrival of September, a gradual shift towards cooler fall weather becomes evident. A noticeable dip in temperature manifests in a drop from 70.3°F (21.3°C), drawing summer to an end. This month also witnesses a decline in rainfall, making it the driest period since winter. Weather in September »

Weather in October

October marks a significant transition towards cooler weather in Merrillan, Wisconsin as fall takes a firmer grip. The drop in temperature more noticeable, reaching around a maximum of 55.2°F (12.9°C). While rainfall inches down, it continues to sustain the humidity levels. Weather in October »

Weather in November

November witnesses the full-fledged arrival of the late fall with a significant drop in temperature, making the weather considerably colder. Precipitation takes the form of lessened rain coupled with increasing snowfall, which amounts to 1.26" (32mm). Weather in November »

Weather in December

December plunges Merrillan, Wisconsin into the full swing of winter, with average low temperatures reaching as low as 15.4°F (-9.2°C). The winter solstice takes place this month, resulting in the shortest daylight hours of the year. Weather in December »