Weather in Peoria

Planning your day in Peoria? Check out the freshest weather data, detailed forecasts, and visual charts right here in this section.

The climate in Peoria, USA, is characterised as continental with four distinct seasons. This means visitors can expect significant temperature fluctuations throughout the year. Summers are generally warm and sometimes hot, while winters are cold, with temperatures often dropping below freezing.

Peoria experiences warm summer months, especially in July and August, with average temperatures reaching comfortable levels for outdoor activities. Winters, in contrast, are cold, particularly in January and February, when average temperatures drop below freezing, and snowfall is possible. Spring and autumn are transitional seasons with more moderate temperatures. Rainfall is distributed relatively evenly throughout the year, without a distinct rainy season, although spring and autumn months can be slightly wetter.

Overall, the weather in Peoria offers variety throughout the year. Travellers should consider the season when planning a trip: summer months are suitable for those who prefer warm weather, while fans of cool air and potential snow will enjoy the winter months more. Spring and autumn offer pleasant, moderate conditions for exploring the city.

The climate in Peoria is characterised by distinct seasonal temperature fluctuations throughout the year. The coldest month is usually January, when the average temperature is -2.8°C, and minimum night-time temperatures can drop to -6.6°C. February also remains frosty, with an average temperature of -0.7°C. In contrast, the peak of summer heat occurs in July, where the average temperature reaches 24.6°C, and daily highs regularly rise to 29.2°C. June and August are also very warm months, with average temperatures above 23°C, making them suitable for various summer activities.

Summer in Peoria, lasting from June to August, is distinguished by hot weather. Daytime temperatures often approach the +28°C...+29°C mark, while nights remain quite warm, with minimum values around +18°C...+20°C. The winter period, covering December, January, and February, brings cold weather. Average maximum daytime temperatures in these months vary from +1.1°C (in January) to +5.6°C (in December), while night-time temperatures consistently drop below freezing, reaching -6.6°C in January. Peoria is characterised by noticeable diurnal temperature fluctuations throughout the year, where the difference between daily highs and night-time lows is often 7-10°C, and sometimes more, which is particularly perceptible in spring and autumn.

In the city of Peoria, precipitation is distributed throughout the year, and there is no distinct rainy season or dry period in terms of rainfall volume. However, some fluctuations in the amount and frequency of precipitation are observed in different months. Overall, precipitation levels are moderate, with the maximum average monthly value reaching 4 mm.

The winter months, from December to February, are characterised by sub-zero average temperatures, so precipitation here most often falls as snow. The average monthly rainfall during this period is about 2 mm. January and February count approximately 10 days with precipitation each, and December has about 8, indicating regular but generally not too heavy snowfalls.

Spring and early summer, as well as mid-autumn, are generally the periods with the highest amount of precipitation. The wettest months by volume (4 mm) are considered March, May, June, and October. April and May also stand out with the highest number of rainy days – up to 13 days per month. During these periods, as temperatures rise, precipitation falls mainly as rain. In summer, in July and August, the amount of rainfall decreases slightly (3 mm), with about 11 rainy days in July and about 9 in August.

The driest month in Peoria is September, when only about 2 mm of precipitation falls, and the number of days with precipitation drops to an average of 7. November is also relatively dry (2 mm of precipitation, 8 wet days), and with temperatures dropping towards the end of the month, the first snowfalls are possible. Thus, residents and visitors to Peoria can expect precipitation at any time of the year, but its intensity and form will change depending on the season.

When planning a trip to Peoria, it is important to consider the changeable weather throughout the year. In winter (December to February), it is quite cold here, with average temperatures below freezing and potential frost, so be sure to bring warm clothing: an insulated jacket or coat, a hat, gloves, a scarf, and warm socks. Although there is not much precipitation, the number of days with it (likely snow or wet snow) is significant, so waterproof shoes will be very useful. In spring (March-May) and autumn (September-November), the weather is transitional: temperatures gradually rise in spring and fall in autumn. For these seasons, layered clothing is best: light sweaters, cardigans, long-sleeved t-shirts, and a medium-weight jacket. Don't forget an umbrella or a light waterproof jacket, as the number of rainy days remains high, especially in spring.

Summer in Peoria (June-August) is warm and occasionally hot, with average temperatures above +20°C and highs reaching almost +30°C. For this time of year, pack light and breathable clothing: t-shirts, shorts, sundresses, sandals. Sunscreen, a hat, and sunglasses will become your indispensable companions for sun protection. Despite the summer weather, some rainy days are still possible, so a compact umbrella or a light raincoat won't go amiss. Regardless of the season, comfortable walking shoes are a must-have, as you will surely want to explore the city on foot.

The principle of layering clothing will be your best friend in Peoria at any time of the year, as it allows you to easily adapt to temperature changes throughout the day, especially during the transitional seasons. For example, it might be cool in the morning and significantly warmer in the afternoon. Given the number of days with precipitation throughout the year, having an umbrella or light waterproof clothing in your luggage will always be a sensible decision.