Cool
Average highs are around 9°C, so pack for cooler days.
March verdict
Ottawa, Illinois, United States in March
Weather score33Poor
Poor for holiday weather
Average highs are around 9°C, so pack for cooler days. Sunshine averages 5.9h per day, enough for a balanced month. Rainfall averages 67mm, which is relatively low for holiday planning.
March weather
Monthly averages
Temp
9°C
Rain
67mm
Sun
5.9h
Weather score
33
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 67mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.9h per day, enough for a balanced month.
Map
Weather map
Compare Ottawa, Illinois, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
March9°C average high
March is on the cooler side of Ottawa's year, useful if you prefer less intense daytime heat.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
March67mm average rain
March sits near Ottawa's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to February, October, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
March5.9 hours average sun
March is below Ottawa's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
March33 weather score
March is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
