Climate and monthly weather forecastPalatine, IL
Climate and monthly weather forecast
The climate of Palatine
Located in Illinois, United States, Palatine is characterized by a Humid Continental climate, Fall under the Dfa Köppen climate classification. This is determined by no dry season and hot summers prevailing in the region.Going through the year, changes in temperature differentiate noticeably, reaching high temperatures from 27.9°F (-2.3°C) in January to a peak of about 81.5°F (27.5°C) in July. Low temperatures fluctuate from a chilly 16.9°F (-8.4°C) in January to a warmer 65.8°F (18.8°C) in July. Relative humidity stays relatively constant ranging from 73% to 83%, showing wetness in the air throughout the year.
Monthly rainfall in Palatine ranges from 0.59" (15mm) to 1.77" (45mm), with heavier rains typically occurring during May. Surprisingly, snowfall can reach up to 1.81" (46mm) in February, marking winter's deep freeze. Fortunately, the amount of snowfall decreases to as low as 0" (0mm) between June through September, offering some respite from the cold.
The daylight hours in Palatine reach their maximum in June, peaking at roughly 15.2 hours, and reducing to a minimum of approximately 9.2 hours in December. Along with this, sunshine hours extend to a maximum of 10.1 hours in July and diminishes to about 4 hours in rainier December.
The best time to visit Palatine
Considering climatic conditions, the best time to visit Palatine is from June to September. During these months, the recorded high temperatures steadily range from 73.2°F (22.9°C) to 81.5°F (27.5°C) and low temperatures hover from 57.9°F (14.4°C) to 65.8°F (18.8°C), presenting warm weather that's loved by most visitors. The rainfall remains relatively lower during these months as well, between 1.14" (29mm) to 1.73" (44mm), leading to pleasant weather conditions. The probability of encountering snow is almost null, which further makes travelling comfortable.The worst time to visit Palatine
It may be less enjoyable to visit Palatine during the colder months of December through February. The average high temperatures remain low, within a range of 27.9°F (-2.3°C) to 43.9°F (6.6°C) while average lows dip to between 16.9°F (-8.4°C) to 30.6°F (-0.8°C). The periods also experience higher rainfall and snowfall, potentially making outdoor activities challenging.Spring weather in Palatine
Spring in Palatine runs from March to May, seeing temperatures that vary from a low of 30.6°F (-0.8°C) to a high of 67.1°F (19.5°C). Relative humidity during these months ranges from 75% to 76%, signaling that the atmosphere is generally moist. Rainfall falls between 0.75" (19mm) and 1.77" (45mm).Summer weather in Palatine
Summers in Palatine are from June to August, seeing temperatures that reach a high of 81.5°F (27.5°C) and minimize to 57.9°F (14.4°C). The duration of daylight hours falls between 13.8 hours to 15.2 hours, providing long days suitable for various activities. Rainfall records range from 1.14" (29mm) to 1.73" (44mm), while snowfall is non-existant.Autumn weather in Palatine
Autumn in Palatine spans from September to November. Daytime temperatures are reasonably comfortable, ranging from 45.5°F (7.5°C) to 73.2°F (22.9°C). Nighttime temperatures drop considerably, from 33.4°F (0.8°C) to 57.9°F (14.4°C). Monthly rainfall varies from 0.63" (16mm) to 1.18" (30mm). Snow is rare, peaking at a measly 0.16" (4mm) in October.Winter weather in Palatine
The winter months in Palatine, spanning from December to February, experience high temperatures ranging from 27.9°F (-2.3°C) to 43.9°F (6.6°C), while low temperatures plummet, between 16.9°F (-8.4°C) to 30.6°F (-0.8°C). Winter is typically the coldest time of the year, with snow reaching up to 1.81" (46mm) in February. The daylight hours also shorten, between 9.2 hours and 10.6 hours.Weather in January
The start of the year in Palatine finds the landscape enrobed by frost as temperatures hover around 16.9°F (-8.4°C) to 27.9°F (-2.3°C), and 11.1 days of snowfall bringing 1.77" (45mm) of snow. Frosty conditions persist throughout the month, making it crucial to bundle up before stepping outside. Weather in January »Weather in February
As Palatine transitions into February, the snowy canvas manifests itself rather attractively with temperatures slightly increasing from January, reaching up to 31.5°F (-0.3°C). The city experiences 1.81" (46mm) of snow spread over 8.3 days. Weather in February »Weather in March
March brings a noticeable shift in Palatine’s weather scenario as it warms up to a high of 43.9°F (6.6°C), and snowfall recedes significantly to just 0.47" (12mm) registered over 5.3 days. The canvas of the city starts to change as the snow gives way to clear days and slightly warmer air sweeps across. Weather in March »Weather in April
The arrival of April sees Palatine metamorphosing under bright sunshine for 7.5 hours a day and the temperature soaring up to a pleasant 54.9°F (12.7°C). The last vestiges of winter vanish with scarcely any snowfall recorded, standing at 1.22" (31mm) for only 1.8 days. Weather in April »Weather in May
The month of May brings quintessential spring weather to Palatine, with temperatures steadily rising to 67.1°F (19.5°C). Snowfall is completely absent during this month, making way for a clear sky overhead and a springy turf underfoot. Weather in May »Weather in June
June ushers in the onset of summer in Palatine, with significant increases in temperature, reaching highs of 76.8°F (24.9°C). Amidst the warm weather, 15.2 hours of daylight illuminates the city, displaying brilliant hues of blue skies and vibrant green lawns. Weather in June »Weather in July
July captures the zenith of Palatine’s summer, exhibiting the highest temperature of the year at 81.5°F (27.5°C). The city basks under the glaring sun for 10.1 hours a day, creating a hot and humid ambiance. It is the time of year when locals head to water bodies to cool down under the summer sun, as the city is engulfed in a typical Midwestern summer. Weather in July »Weather in August
August, although slightly cooler than July with a high of 80.1°F (26.7°C), maintains a warm, summer environment in Palatine. The city still benefits from an extensive period of sunshine lasting 10.1 hours a day, presenting the quintessential picture of summer, despite being on its tail end. Weather in August »Weather in September
September carries a whisper of change in the air of Palatine as the city transitions towards fall with high temperatures sliding down to 73.2°F (22.9°C). The weather gives off an ambiguously warm and yet subtly cool feel. It is a time of considerable change as the foliage starts to turn shades of orange and red, reflecting the changing climate. Weather in September »Weather in October
October paints Palatine in hues of fall, with temperatures dropping further to a high of 60.1°F (15.6°C). The weather presents an enchanting mix of warm colors and cool air, with crisp breezes lending a fresh feel to the atmosphere. Weather in October »Weather in November
The arrival of November introduces Palatine to the doorstep of winter as temperatures plummet to 45.5°F (7.5°C). The early signs of winter show with around 3.3 days of snowfall, depositing 0.43" (11mm) of snow on the ground. Weather in November »Weather in December
December ultimately ushers in winter's rule in Palatine. The temperatures continue their downward trend, only reaching a high of 34.3°F (1.3°C), and a blanket of snow wraps the city with 0.98" (25mm) falling across 7.5 days. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Palatine, IL
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.9°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure
Palatine, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Palatine, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Palatine, IL
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Palatine, IL
- Average rainfall in January:
0.67" - Average rainfall in February:
0.75" - Average rainfall in March:
0.75" - Average rainfall in April:
1.54" - Average rainfall in May:
1.77" - Average rainfall in June:
1.61"
- Average rainfall in July:
1.61" - Average rainfall in August:
1.73" - Average rainfall in September:
1.14" - Average rainfall in October:
1.18" - Average rainfall in November:
0.63" - Average rainfall in December:
0.59"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days
Palatine, IL
- Average rainfall days in January:
4.5 days - Average rainfall days in February:
3.8 days - Average rainfall days in March:
9 days - Average rainfall days in April:
13 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
14.5 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
6.2 days - Average rainfall days in December:
4.6 days
The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (3.8 days).
Average snowfall
Palatine, IL
- Average snowfall in January:
1.77" - Average snowfall in February:
1.81" - Average snowfall in March:
0.47" - Average snowfall in April:
1.22" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Palatine, IL
- Average snowfall days in January:
11.1 days - Average snowfall days in February:
8.3 days - Average snowfall days in March:
5.3 days - Average snowfall days in April:
1.8 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
3.3 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Palatine, IL
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
3h and 54min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 30min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Palatine, IL
- Average sunshine days in January:
18.3 days - Average sunshine days in February:
16.2 days - Average sunshine days in March:
17.5 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
13.3 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
12.1 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
17.4 days - Average sunshine days in November:
20.2 days - Average sunshine days in December:
20.1 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is July (12.1 days).
Average UV index
Palatine, IL
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Palatine, IL
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 31).
Average visibility
Palatine, IL
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).





