What’s the climate like in Saint Peter?
The current climate of Saint Peter features average monthly temperatures ranging from highs of 31°C during the day to lows of 5°C. The average yearly temperature is around 20°C. At night, temperatures in the colder months average around -4°C and in the warmer months around 20°C.
The highest temperature recorded in Saint Peter in recent years was 38°C in July 2023. The lowest daytime temperature recorded was -17°C in January 2014.
On average, Saint Peter gets 1006 mm of precipitation each year. Of this, about 23 cm is snowfall. For comparison, London gets 701 mm of precipitation each year.
Best time to visit Saint Peter?
The best time to visit Saint Peter for sunny weather is May through July, September and October. During this period, you'll have good temperatures and not too much rain, making it a great time to visit Saint Peter. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of Saint Peter
The climate table of Saint Peter shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 5 | 7 | 13 | 19 | 25 | 31 | 31 | 29 | 28 | 21 | 14 | 8 |
| Temp. min (°C) | -4 | -2 | 3 | 9 | 15 | 20 | 21 | 19 | 16 | 10 | 3 | 0 |
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| Precipitation (mm) | 42 | 46 | 81 | 128 | 66 | 117 | 89 | 160 | 66 | 66 | 83 | 62 |
| Snow (cm) | 7,7 | 7,7 | 1,0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2,2 | 4,1 |
| UV Index | 2 | 3 | 4 | 3 | 6 | 8 | 6 | 5 | 3 | 4 | 3 | 3 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 20°C
- Highest temperature: 31°C in June and July
- Lowest temperature: 5°C in January
- Precipitation*: 1006 mm per year, averaging 84 mm per month
- Snowfall: 23 cm per year
- Driest months: 42 mm in January, 46 mm in February and 62 mm in December
- Wettest months: 160 mm in August, 128 mm in April and 117 mm in June
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Saint Peter
This graph shows the average maximum temperatures per month in Saint Peter, Illinois. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Saint Peter
This graph shows how much precipitation Saint Peter, Illinois, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Saint Peter
This graph shows how much snow Saint Peter, Illinois, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Saint Peter
This graph shows the average UV index per month in Saint Peter, Illinois. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Saint Peter
This graph shows the average yearly temperature in Saint Peter, Illinois. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Saint Peter
This chart shows the total yearly precipitation in Saint Peter, Illinois, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Saint Peter
This chart shows the total yearly snowfall in Saint Peter, Illinois, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in Saint Peter
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Average Weather in Saint Peter by Month
Click on a month below to see detailed weather info for Saint Peter. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
