Record envelope, standing records and threshold days for Olla (USC00166978), Louisiana, United States, with 40 years of record.
Key Facts for Olla
Olla (USC00166978) is a weather station in Louisiana, United States at 31.89 latitude and -92.24 longitude, 47 m (155 ft) above sea level.
The station reports from 1970 to 2009, 40 years of record.
1,464 records set at Olla still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Olla set a daily record precipitation of 81.3 mm (3.2 in) on 10 December 2008.
About the Station
Location: Louisiana, United States, 31.89 latitude, -92.24 longitude.
Elevation: 47 m (155 ft).
Period of record: 1970 to 2009, 40 years.
Eligible elements: prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Olla. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Olla, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
27.8 C (82.0 F)
-15.0 C (5.0 F)
n/a
n/a
Feb
30.0 C (86.0 F)
-9.4 C (15.1 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-8.9 C (16.0 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-2.8 C (27.0 F)
n/a
n/a
May
36.1 C (97.0 F)
4.4 C (39.9 F)
n/a
n/a
Jun
38.3 C (100.9 F)
8.9 C (48.0 F)
n/a
n/a
Jul
39.4 C (102.9 F)
12.8 C (55.0 F)
n/a
n/a
Aug
41.7 C (107.1 F)
11.1 C (52.0 F)
n/a
n/a
Sep
38.9 C (102.0 F)
3.9 C (39.0 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-3.3 C (26.1 F)
n/a
n/a
Nov
31.1 C (88.0 F)
-8.9 C (16.0 F)
n/a
n/a
Dec
28.9 C (84.0 F)
-15.0 C (5.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Olla still stand. 1989 holds the most, with 79.
Standing records at Olla by the year they were set
Year set
Standing records
1970
66
1971
59
1972
74
1973
57
1974
73
1975
49
1976
56
1977
60
1978
56
1979
35
1980
71
1981
46
1982
65
1983
51
1984
12
1986
31
1987
35
1988
46
1989
79
1990
38
1999
31
2000
66
2001
46
2002
48
2003
54
2004
46
2005
32
2006
26
2007
16
2008
39
2009
1
Wettest Day of Each Month
Nov: 361.2 mm (14.2 in)
The wettest day on record for each calendar month at Olla. The most was 361.2 mm (14.2 in) on 16 November 1987.
Record daily precipitation for each month at Olla
Month
Record daily precipitation (mm)
Date
Jan
123.2 mm (4.9 in)
20 January 1979
Feb
158.2 mm (6.2 in)
12 February 1984
Mar
155.4 mm (6.1 in)
4 March 1977
Apr
119.9 mm (4.7 in)
29 April 1991
May
144.8 mm (5.7 in)
19 May 1983
Jun
109.5 mm (4.3 in)
23 June 1980
Jul
81.0 mm (3.2 in)
1 July 1989
Aug
121.4 mm (4.8 in)
20 August 2008
Sep
153.7 mm (6.1 in)
2 September 2008
Oct
337.8 mm (13.3 in)
17 October 2006
Nov
361.2 mm (14.2 in)
16 November 1987
Dec
187.5 mm (7.4 in)
12 December 1998
Period of Record Coverage
1970 to 2009
Complete yearUnder 90 percent of days
32 years of record at Olla, 1970 to 2009. 7 years have data for under 90 percent of days and are left out of rankings: 1984, 1990, 1991, 1999, 2000, 2007, 2009.
Cooler than the station meanWarmer than the station mean
One stripe for each of 24 complete years at Olla, 1970 to 2006. Blue stripes are years cooler than the station's own mean of 18.0 C (64.5 F); red stripes are warmer. The coolest year was 1976, at 16.8 C (62.3 F), and the warmest was 2004, at 19.5 C (67.1 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Olla as warming stripes, 1970 to 2006
Year
Annual mean temperature
Difference from the station mean
1970
17.5 C
-0.51 C
1971
18.2 C
+0.16 C
1972
18.2 C
+0.11 C
1973
18.2 C
+0.10 C
1974
18.1 C
+0.08 C
1975
17.9 C
-0.17 C
1976
16.8 C
-1.24 C
1977
17.9 C
-0.16 C
1978
17.3 C
-0.80 C
1979
16.9 C
-1.14 C
1980
17.9 C
-0.19 C
1981
17.8 C
-0.29 C
1982
18.1 C
+0.03 C
1983
17.0 C
-1.07 C
1986
18.7 C
+0.62 C
1987
18.0 C
-0.02 C
1988
17.9 C
-0.16 C
1989
18.1 C
+0.07 C
1990
18.9 C
+0.88 C
2001
18.4 C
+0.35 C
2002
18.4 C
+0.39 C
2004
19.5 C
+1.44 C
2005
18.9 C
+0.89 C
2006
18.6 C
+0.55 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1970 to 2009
Yearly extremes at Olla: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
1999
37.2 C (99.0 F)
32
Coldest night (TNn)
-15.0 C (5.0 F)
1982
-8.9 C (16.0 F)
32
Wettest day (Rx1day)
361.2 mm (14.2 in)
1987
102.6 mm (4.0 in)
39
Wettest five days (Rx5day)
454.9 mm (17.9 in)
2006
149.8 mm (5.9 in)
39
Longest dry spell (CDD)
40 days
2000
23 days
39
Hottest day (TXx)
The hottest day of the year at Olla, 1970 to 2009. The record is 41.7 C (107.1 F) in 1999, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Olla by year
Year
Hottest day (TXx)
1970
37.2 C (99.0 F)
1971
36.1 C (97.0 F)
1972
36.7 C (98.1 F)
1973
36.7 C (98.1 F)
1974
36.1 C (97.0 F)
1975
35.0 C (95.0 F)
1976
36.7 C (98.1 F)
1977
37.2 C (99.0 F)
1978
37.2 C (99.0 F)
1979
36.7 C (98.1 F)
1980
39.4 C (102.9 F)
1981
38.9 C (102.0 F)
1982
36.7 C (98.1 F)
1983
37.8 C (100.0 F)
1984
29.4 C (84.9 F)
1986
38.9 C (102.0 F)
1987
36.7 C (98.1 F)
1988
38.3 C (100.9 F)
1989
36.1 C (97.0 F)
1990
37.8 C (100.0 F)
1991
20.0 C (68.0 F)
1992
n/a
1993
n/a
1994
n/a
1995
n/a
1996
n/a
1997
n/a
1998
n/a
1999
41.7 C (107.1 F)
2000
41.7 C (107.1 F)
2001
36.7 C (98.1 F)
2002
37.2 C (99.0 F)
2003
37.2 C (99.0 F)
2004
36.7 C (98.1 F)
2005
37.8 C (100.0 F)
2006
38.9 C (102.0 F)
2007
38.9 C (102.0 F)
2008
38.9 C (102.0 F)
2009
27.8 C (82.0 F)
Coldest night (TNn)
The coldest night of the year at Olla, 1970 to 2009. The record is -15.0 C (5.0 F) in 1982, marked on the chart; the median year is -8.9 C (16.0 F).
Coldest night (TNn) at Olla by year
Year
Coldest night (TNn)
1970
-10.6 C (12.9 F)
1971
-8.3 C (17.1 F)
1972
-8.9 C (16.0 F)
1973
-8.9 C (16.0 F)
1974
-6.1 C (21.0 F)
1975
-9.4 C (15.1 F)
1976
-11.1 C (12.0 F)
1977
-12.2 C (10.0 F)
1978
-8.9 C (16.0 F)
1979
-10.6 C (12.9 F)
1980
-8.9 C (16.0 F)
1981
-9.4 C (15.1 F)
1982
-15.0 C (5.0 F)
1983
-14.4 C (6.1 F)
1984
-9.4 C (15.1 F)
1986
-7.2 C (19.0 F)
1987
-6.7 C (19.9 F)
1988
-9.4 C (15.1 F)
1989
-15.0 C (5.0 F)
1990
-10.0 C (14.0 F)
1991
-5.0 C (23.0 F)
1992
n/a
1993
n/a
1994
n/a
1995
n/a
1996
n/a
1997
n/a
1998
n/a
1999
-5.6 C (21.9 F)
2000
-11.1 C (12.0 F)
2001
-9.4 C (15.1 F)
2002
-8.9 C (16.0 F)
2003
-8.3 C (17.1 F)
2004
-7.2 C (19.0 F)
2005
-5.6 C (21.9 F)
2006
-6.7 C (19.9 F)
2007
-5.0 C (23.0 F)
2008
-7.8 C (18.0 F)
2009
-6.1 C (21.0 F)
Wettest day (Rx1day)
The wettest day of the year at Olla, 1970 to 2009. The record is 361.2 mm (14.2 in) in 1987, marked on the chart; the median year is 102.6 mm (4.0 in).
Wettest day (Rx1day) at Olla by year
Year
Wettest day (Rx1day)
1970
71.1 mm (2.8 in)
1971
56.4 mm (2.2 in)
1972
74.4 mm (2.9 in)
1973
95.3 mm (3.8 in)
1974
124.5 mm (4.9 in)
1975
100.6 mm (4.0 in)
1976
54.9 mm (2.2 in)
1977
155.4 mm (6.1 in)
1978
99.1 mm (3.9 in)
1979
123.2 mm (4.9 in)
1980
114.0 mm (4.5 in)
1981
82.0 mm (3.2 in)
1982
137.4 mm (5.4 in)
1983
144.8 mm (5.7 in)
1984
158.2 mm (6.2 in)
1986
102.6 mm (4.0 in)
1987
361.2 mm (14.2 in)
1988
66.0 mm (2.6 in)
1989
133.1 mm (5.2 in)
1990
106.7 mm (4.2 in)
1991
119.9 mm (4.7 in)
1992
97.0 mm (3.8 in)
1993
65.0 mm (2.6 in)
1994
91.4 mm (3.6 in)
1995
104.1 mm (4.1 in)
1996
92.7 mm (3.6 in)
1997
100.3 mm (3.9 in)
1998
187.5 mm (7.4 in)
1999
113.5 mm (4.5 in)
2000
89.9 mm (3.5 in)
2001
156.2 mm (6.1 in)
2002
128.3 mm (5.1 in)
2003
71.1 mm (2.8 in)
2004
108.0 mm (4.3 in)
2005
69.9 mm (2.8 in)
2006
337.8 mm (13.3 in)
2007
99.1 mm (3.9 in)
2008
153.7 mm (6.1 in)
2009
24.4 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Olla, 1970 to 2009. The record is 454.9 mm (17.9 in) in 2006, marked on the chart; the median year is 149.8 mm (5.9 in).
Wettest five days (Rx5day) at Olla by year
Year
Wettest five days (Rx5day)
1970
117.7 mm (4.6 in)
1971
115.0 mm (4.5 in)
1972
116.3 mm (4.6 in)
1973
160.3 mm (6.3 in)
1974
154.4 mm (6.1 in)
1975
269.0 mm (10.6 in)
1976
97.3 mm (3.8 in)
1977
165.8 mm (6.5 in)
1978
126.5 mm (5.0 in)
1979
235.7 mm (9.3 in)
1980
149.8 mm (5.9 in)
1981
103.6 mm (4.1 in)
1982
255.2 mm (10.0 in)
1983
330.4 mm (13.0 in)
1984
168.1 mm (6.6 in)
1986
149.1 mm (5.9 in)
1987
431.8 mm (17.0 in)
1988
106.9 mm (4.2 in)
1989
212.1 mm (8.4 in)
1990
178.4 mm (7.0 in)
1991
188.5 mm (7.4 in)
1992
127.5 mm (5.0 in)
1993
116.1 mm (4.6 in)
1994
121.7 mm (4.8 in)
1995
268.0 mm (10.6 in)
1996
101.3 mm (4.0 in)
1997
147.6 mm (5.8 in)
1998
281.7 mm (11.1 in)
1999
145.8 mm (5.7 in)
2000
167.4 mm (6.6 in)
2001
306.1 mm (12.1 in)
2002
147.1 mm (5.8 in)
2003
127.2 mm (5.0 in)
2004
156.6 mm (6.2 in)
2005
114.6 mm (4.5 in)
2006
454.9 mm (17.9 in)
2007
99.1 mm (3.9 in)
2008
290.6 mm (11.4 in)
2009
56.4 mm (2.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Olla, 1970 to 2009. The record is 40 days in 2000, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Olla by year
Year
Longest dry spell (CDD)
1970
27 days
1971
23 days
1972
20 days
1973
15 days
1974
19 days
1975
29 days
1976
25 days
1977
22 days
1978
19 days
1979
31 days
1980
31 days
1981
20 days
1982
18 days
1983
27 days
1984
9 days
1986
25 days
1987
35 days
1988
31 days
1989
18 days
1990
22 days
1991
28 days
1992
18 days
1993
17 days
1994
14 days
1995
24 days
1996
25 days
1997
19 days
1998
32 days
1999
25 days
2000
40 days
2001
25 days
2002
21 days
2003
24 days
2004
18 days
2005
38 days
2006
21 days
2007
18 days
2008
28 days
2009
16 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
24 years with a frost
Across 24 years with a frost, the median last spring frost at Olla falls on 25 March and the median first autumn frost on 8 November, which leaves a median of 228 days between them.
Frost dates and growing season at Olla
Measure
Median, all years
Earliest period
Recent period (1970 to 2006)
Recent against earliest
Fitted trend
Last spring frost
25 March
n/a
25 March
n/a
n/a
First autumn frost
8 November
n/a
8 November
n/a
n/a
Growing days
228 days
n/a
228 days
n/a
n/a
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
37 years, 1970 to 2008
A day with at least 101.1 mm (4.0 in) of rain is expected about once in 2 years. A day with at least 376.3 mm (14.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Olla: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
101.1 mm (4.0 in)
5 years
144.2 mm (5.7 in)
10 years
182.2 mm (7.2 in)
25 years
244.4 mm (9.6 in)
50 years
303.6 mm (12.0 in)
Longer than the 37 years of record
100 years
376.3 mm (14.8 in)
Longer than the 37 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 37 years of values from 1970 to 2008.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 361.2 mm (14.2 in) in 1987; 337.8 mm (13.3 in) in 2006; 187.5 mm (7.4 in) in 1998.
Download the Data
Data for Olla standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Olla threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.