We can't answer what is extreme for your location. What is your location ?

For me anything over 4 is extreme...looking back at 16+ years of data:

# echo "select datetime(dateTime,'unixepoch','localtime'),dateTime,rainRate 
from archive where rainRate > 4;" | sqlite3 vp2.sdb
2010-06-09 17:00:00|1276128000|5.14
2010-06-09 17:05:00|1276128300|5.76
2011-10-11 17:00:00|1318377600|7.02
2012-04-25 17:45:00|1335401100|6.94
2012-06-07 13:40:00|1339101600|4.57
2013-09-28 16:45:00|1380411900|4.84
2013-09-30 15:20:00|1380579600|5.49
2014-01-11 04:25:00|1389443100|4.68
2014-01-11 04:30:00|1389443400|4.68
2014-05-03 22:45:00|1399182300|4.97
2015-01-18 11:05:00|1421607900|5.2799999946144
2015-06-02 12:40:00|1433274000|7.99999999184
2015-10-10 14:30:00|1444512600|5.4299999944614
2015-10-31 11:30:00|1446316200|4.8399999950632
2016-08-07 22:00:00|1470632400|4.9199999949816
2017-02-03 09:20:00|1486142400|5.0099999948898
2017-04-22 18:35:00|1492911300|4.3599999955528
2018-04-07 08:40:00|1523115600|4.09
2019-09-07 19:45:00|1567910700|5.65
2024-01-09 00:05:00|1704787500|5.76

Which lines up with the summary table:

 # echo "select datetime(dateTime,'unixepoch','localtime'),dateTime,max 
from archive_day_rainRate where max > 4;" | sqlite3 vp2.sdb
2010-06-09 00:00:00|1276066800|5.76
2011-10-11 00:00:00|1318316400|7.02
2012-04-25 00:00:00|1335337200|6.94
2012-06-07 00:00:00|1339052400|4.57
2013-09-28 00:00:00|1380351600|4.84
2013-09-30 00:00:00|1380524400|5.49
2014-01-11 00:00:00|1389427200|4.68
2014-05-03 00:00:00|1399100400|4.97
2015-01-18 00:00:00|1421568000|5.2799999946144
2015-06-02 00:00:00|1433228400|7.99999999184
2015-10-10 00:00:00|1444460400|5.4299999944614
2015-10-31 00:00:00|1446274800|4.8399999950632
2016-08-07 00:00:00|1470553200|4.9199999949816
2017-02-03 00:00:00|1486108800|5.0099999948898
2017-04-22 00:00:00|1492844400|4.3599999955528
2018-04-07 00:00:00|1523084400|4.09
2019-09-07 00:00:00|1567839600|5.65
2024-01-09 00:00:00|1704787200|5.76

Interestingly for me, most of the big rainRate(s) do not equate to high 
rain totals.   The squall comes in, dumps a bucket of rain in a heartbeat, 
then is gone.

On Wednesday, October 29, 2025 at 4:37:36 PM UTC-7 S Phillips wrote:

> Sorry for the delay in response to the suggestions, been quite busy as of 
> late.  
> I performed the drop daily and rebuild daily as recommended, but 
> unfortunately that did not fix it. I gathered the NOAA reports from the 
> WeeWX to get an idea as to where the bad data might reside.  I also 
> gathered the actual readings which were observed from the nearest official 
> NOAA station and use that data to figure out which is true or not. 
>
> One of the issues that I am unable to grab from NOAA is the rain rate as 
> it does not appear to be collected.  The "highest daily rain rate" from my 
> WeeWX installation/DB is "84.62 in/hr" which is obviously incorrect.  I ran 
> the following SQL query to see how many lines were over 10 (which I assume 
> is 10 in/hr) which resulted in 29 lines of which 15 of those lines were 
> between 10 and 29.  The rest were 40 or over so I assume that those are all 
> bad values.  My question regarding that is what is an average rain rate 
> that is observed and what is "extreme"?  
>
> On Monday, October 27, 2025 at 1:03:19 PM UTC-5 vince wrote:
>
>> Suggest you look at each yearly report to see which month(s) or year(s) 
>> you think you have issues to clean up.  We can't guess what normal vs. 
>> abnormal might be for your site, as everybody has different measures of 
>> 'normal' for rain.
>>
>> Poke around your NOAA directory if you're comfortable with the command 
>> line, but note that Belchertown has its own NOAA tree under the hood of the 
>> html files it generates.  If you are running other skins like the default 
>> Seasons or Standard skins, they would go into a different NOAA directory 
>> probably.
>>
>> Or just get there through the web gui.  Look year by year.  Note which 
>> date ranges look like they're wrong. We can give you more specific guidance 
>> when we know what dates we might need to fiddle with.
>>
>> On Sunday, October 26, 2025 at 8:20:57 PM UTC-7 S Phillips wrote:
>>
>>> Hello all, I am needing some advice on how to fix an issue that I have 
>>> been having since 2016 related to my rain records.  Seems that lack of 
>>> physical maintenance related to leaves and the rain collector has caused 
>>> this problem with erroneous data being captured by my Vantage Pro and 
>>> WeeWX. Combine that with lazyness and you get where I am now almost a 
>>> decade later.  
>>>
>>> On the records page for the Belchertown skin, I have bad data for the 
>>> following areas: "Highest Daily Rainfall", "Highest Daily Rain Rate", 
>>> "Month with Highest Total Rainfall" and "Total Rainfall for".  
>>>
>>> I admit that I caused this issue in the past as I attempted to clean the 
>>> data from the database. I later have learned that the method that I 
>>> previously used was incorrect. I would like to keep my good historical data 
>>> but I would like to get my values back to reading correctly.  Included is a 
>>> screenshot of my records page which shows the culprit being in 2016 (for 
>>> now).  Any assistance in correcting my messup would be much appreciated. 
>>>
>>> (PS: My Pi that ran my previous WeeWX install died in Dec 2024 and due 
>>> to health issues, I just got around to loading it on a VM so I have no new 
>>> data until mid-October 2025).
>>> [image: Records.png]
>>>
>>

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