You can web scrap a single day, You can probably do a lot more but I am just a very new learner.
Go to the website and click on March 1, copy the url and try this.
Note the url in the code is for March 1, 2021.
library(tidyverse)
library(rvest)
library(janitor)
content <- read_html("https://www.yr.no/en/forecast/hourly-detailed-table/2-3081368/Poland/Lower%20Silesia/Wrocław/Wroclaw?i=0")
table <- content %>% html_table(fill = TRUE)
# convert from list item to dataframe
table1 <- table[[1]]
# tidy up names
table1 <- table1 %>% clean_names()
Best of luck.
Note this is all shamelessly stolen from https://www.programmingwithr.com/scrape-html-table-using-rvest/