Monthly Weather Events - Oak Park

Weather events for OAK PARK up to 31-May-2022

Number of days with Rainfall > 10mm.

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2022 0 2 2 1 0 n/a n/a n/a n/a
2021 2 2 0 0 5 0 1 2 1 3 0 2
2020 2 7 1 2 0 1 1 3 3 4 2 3
2019 0 0 4 3 0 2 1 2 4 2 3 1

Number of days with a maximum 10-min. mean wind speed >= 15m/s

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2022 0 4 0 1 0 n/a n/a n/a n/a
2021 0 3 2 0 0 0 0 0 0 0 0 2
2020 1 7 0 0 1 0 0 2 0 1 0 1
2019 0 1 2 2 0 0 0 0 0 0 0 3

Number of days with Minimum Temperature < 0 deg. C

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2022 8 1 5 5 0 n/a n/a n/a n/a
2021 14 3 5 9 3 0 0 0 0 0 2 1
2020 3 1 6 1 2 0 0 0 1 0 2 9
2019 5 3 1 1 1 0 0 0 0 1 1 6

An objective and measurable approach was adopted in relation to what is considered to be a weather event which could trigger a delay event, i.e. the contractor gets additional time. A delay event is triggered when a weather event exceeds a defined threshold (90th percentile) value in any given month.

Weather events are:

  • Number of days per month with a rainfall amount > 10mm.
  • Number of days per month with a maximum 10-min. mean wind speed >=15m/s.
  • Number of days per month with a minimum temperature < 0 deg. C.