Iowa USA weather data
Iowa USA Weather Data, Plant Disease Risk and Degree-Day Models
IADOT Network - other tables for IA include: All Networks, CWOP/APRS, HADS, METAR, RAWS, see our homepage.
Interactive degree-day maps
Iowa USA base 32 degree-days to date
Degree-day & Phenology Model Calculator
 Also try the full-featured calculator/DD model
Select model: 
Thresholds: lower: °F   upper: °F (or celsius °C:)
  Calc. method:
Start (biofix) date:   End date:   
 Forecast type:   
Statewide Disease Alert Maps: tomato-potato Smith late blight, Tomcast DSV, fire blight,
Data table - to SORT click on headers:
# Location linked to
hourly weather,
plant disease models and
forecasts
using
"Mypest Page"
 
County
Re-
cent
data QA
Fore-
cast
based
virt
data
Nearby
station
based
virt
data

Station code,
links to
NWS recent
weather

Links to
NWS fore-
casts
 
Net-
work
Elev. (ft)
 
Lat./ Long.
(Dec. Deg.)
 
Max-min temperature data and degree-days
(click radio button to calc.)

10 yr
avgs

30 yr
avgs

nmme
fcast

cfs
fcast
1 Adair (I80) Cass
98
na
na
na
na
RDAI4
map
digital
IADOT
1476
 41.49611
-94.72611
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
2 Algona (US18) Kossuth
98
na
na
na
na
RALI4
map
digital
IADOT
1107
 43.08278
-94.39833
2025
2024
2023
2022
2021
2020
2019
2018
2017
2015
2014
2013
AVG AVG nmme cfs
3 Alton (IA10) Sioux
97
na
na
na
na
RTNI4
map
digital
IADOT
1411
 42.99778
-96.08417
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
4 Altoona (I80US-65) Polk
77
na
na
na
na
RTOI4
map
digital
IADOT
859
 41.65944
-93.52194
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
5 Ames (I35) Story
98
na
na
na
na
RAMI4
map
digital
IADOT
1028
 42.03389
-93.57000
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
6 Ankeny (I35) Polk County
97
na
na
na
na
RAKI4
map
digital
IADOT
865
 41.76167
-93.56944
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
AVG AVG nmme cfs
7 Avoca (I80) Pottawattami
98
na
na
na
na
RAVI4
map
digital
IADOT
1239
 41.49806
-95.29139
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
8 Burlington (US34) Des Moines
97
na
na
na
na
RBUI4
map
digital
IADOT
716
 40.81278
-91.09917
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
9 Cantril Van Buren Co
91
na
na
na
na
RCLI4
map
digital
IADOT
676
 40.65778
-92.06194
2025
2024
-
-
nmme
-
10 Carroll (US30) Carroll Coun
97
na
na
na
na
RCAI4
map
digital
IADOT
1276
 42.07833
-94.89722
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
AVG AVG nmme cfs
11 Cedar Rapids (I380) Linn
96
na
na
na
na
RCDI4
map
digital
IADOT
774
 41.97778
-91.67444
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
12 Cedar Rapids (US30) Linn
97
na
na
na
na
RCII4
map
digital
IADOT
807
 41.92972
-91.68361
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
13 Cedar Rapids (US30) Linn
0
na
na
na
na
RCRI4
map
digital
IADOT
761
 41.92583
-91.54972
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
14 Centerville (IA2) Appanoose
96
na
na
na
na
RCNI4
map
digital
IADOT
969
 40.73944
-93.00250
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
15 Colfax (I80) Jasper
97
na
na
na
na
RCFI4
map
digital
IADOT
810
 41.68917
-93.26472
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
16 Council Bluffs (I80) Pottawattami
96
na
na
na
na
RCBI4
map
digital
IADOT
880
 41.23250
-95.86611
2025
2024
2023
2022
2021
2020
2019
2018
2017
2013
AVG AVG nmme cfs
17 Council Bluffs DMS Pottawattami
97
na
na
na
na
RCCI4
map
digital
IADOT
1020
 41.26028
-95.80306
2025
2024
-
-
nmme cfs
18 Creston (US34) Union
0
na
na
na
na
RCEI4
map
digital
IADOT
1275
 41.04972
-94.30778
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
19 Davenport (I80I-280) Rock Island
98
na
na
na
na
RDVI4
map
digital
IADOT
677
 41.60222
-90.67750
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
20 De Soto (I80US-169) Dallas
0
na
na
na
na
RDEI4
map
digital
IADOT
957
 41.54139
-94.01111
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
21 De Witt (US30US-61) Clinton
98
na
na
na
na
RDWI4
map
digital
IADOT
789
 41.82611
-90.57028
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
22 Denison Crawford Cou
0
na
na
na
na
IA060
map
digital
IADOT
1400
 41.91833
-95.34389
2025
2023
2022
2021
2020
2019
2018
2017
2016
2015
AVG AVG nmme cfs
23 Denison Crawford Cou
97
na
na
na
na
RDNI4
map
digital
IADOT
1385
 41.91556
-95.34389
2025
2024
-
-
nmme cfs
24 Des Moines (I235) Polk
98
na
na
na
na
RDMI4
map
digital
IADOT
822
 41.59556
-93.61139
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
25 Des Moines (I35) Polk
97
na
na
na
na
RDSI4
map
digital
IADOT
736
 41.52750
-93.77222
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
26 Dubuque (US20) Dubuque
98
na
na
na
na
RDBI4
map
digital
IADOT
820
 42.49028
-90.73083
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
27 E of Tama HW 30HW 21 Benton
91
na
na
na
na
RTMI4
map
digital
IADOT
822
 41.96472
-92.29806
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
28 Early Sac County
98
na
na
na
na
ERYI4
map
digital
IADOT
1355
 42.47222
-95.14889
2025
2024
-
-
nmme cfs
29 Estherville Emmet County
0
na
na
na
na
IA064
map
digital
IADOT
1283
 43.39917
-94.79722
2025
2023
2022
2021
2020
2019
2018
2017
2016
2015
AVG AVG nmme cfs
30 Estherville Emmet County
98
na
na
na
na
RETI4
map
digital
IADOT
1276
 43.39917
-94.79722
2025
2024
-
-
nmme
-
31 Fort Dodge (US20) Webster
95
na
na
na
na
RFDI4
map
digital
IADOT
939
 42.44611
-94.18333
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
32 Grimes Polk County
97
na
na
na
na
RGAI4
map
digital
IADOT
856
 41.73944
-93.77556
2025
2024
-
-
nmme cfs
33 Grinnell (I80) Poweshiek
98
na
na
na
na
RGRI4
map
digital
IADOT
923
 41.69722
-92.72556
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
34 Hanlontown (I35) Worth
97
na
na
na
na
RHAI4
map
digital
IADOT
1094
 43.39194
-93.34972
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
35 Hawkeye Fayette Coun
98
na
na
na
na
HKYI4
map
digital
IADOT
1076
 42.96472
-91.95333
2025
2024
-
-
nmme cfs
36 I80 at I-380 Johnson Coun
98
na
na
na
na
RTFI4
map
digital
IADOT
787
 41.69361
-91.64444
2025
2024
-
-
nmme cfs
37 Ida Grove (HW 59) Ida
97
na
na
na
na
RIGI4
map
digital
IADOT
1234
 42.35139
-95.47806
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
38 Iowa City (US218) Johnson
93
na
na
na
na
RIAI4
map
digital
IADOT
834
 41.65722
-91.59861
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
39 Iowa City I80 Johnson Coun
95
na
na
na
na
RIOI4
map
digital
IADOT
761
 41.68889
-91.58111
2025
2024
-
Virtual nmme cfs
40 Jefferson (IA4) Greene
97
na
na
na
na
RJFI4
map
digital
IADOT
1017
 42.05167
-94.37806
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
41 Leon (I35)IA-2) Decatur
96
na
na
na
na
RLEI4
map
digital
IADOT
1146
 40.73861
-93.84167
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
42 Manchester (US20) Delaware
98
na
na
na
na
RMNI4
map
digital
IADOT
1014
 42.47083
-91.44722
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
43 Maquoketa US61IA-64 Jackson
98
na
na
na
na
RMQI4
map
digital
IADOT
824
 42.06833
-90.68333
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
44 Marshalltown (US30) Marshall
87
na
na
na
na
RMTI4
map
digital
IADOT
956
 42.00361
-92.96167
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
45 Mason City (I35) Cerro Gordo
0
na
na
na
na
RMCI4
map
digital
IADOT
1236
 43.03778
-93.34167
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
46 Mason City US18 Cerro Gordo
98
na
na
na
na
MSYI4
map
digital
IADOT
1096
 43.11139
-93.12278
2025
2024
-
-
nmme cfs
47 Missouri Valley (I29) Harrison
95
na
na
na
na
RMVI4
map
digital
IADOT
1016
 41.54944
-95.91722
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
48 Mount Pleasant US218 Henry
95
na
na
na
na
RMPI4
map
digital
IADOT
436
 40.89556
-91.55528
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
49 New Hampton (US18) Chickasaw
93
na
na
na
na
RNHI4
map
digital
IADOT
1073
 43.06694
-92.45917
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
50 Onawa (I29) Monona
0
na
na
na
na
RONI4
map
digital
IADOT
996
 41.86528
-96.10306
2025
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
51 Osceola (I35) Clarke
98
na
na
na
na
ROSI4
map
digital
IADOT
1096
 41.02556
-93.79778
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
52 Ottumwa (US63) Wapello
97
na
na
na
na
ROTI4
map
digital
IADOT
642
 41.01667
-92.42111
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
53 Pella (IA163) Mahaska
98
na
na
na
na
RPLI4
map
digital
IADOT
891
 41.39000
-92.87250
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
54 Plainfield (HW 218) Bremer Count
84
na
na
na
na
RPFI4
map
digital
IADOT
965
 42.83306
-92.53694
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
AVG AVG nmme cfs
55 Red Oak (US34US-71) Montgomery
96
na
na
na
na
RROI4
map
digital
IADOT
954
 40.97972
-94.98361
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
56 Rockwell City Calhoun Coun
0
na
na
na
na
IA063
map
digital
IADOT
1266
 42.45000
-94.67000
2025
2023
2022
2021
2020
2019
2018
2017
2016
2015
AVG AVG nmme cfs
57 Rockwell City Calhoun Coun
97
na
na
na
na
RRWI4
map
digital
IADOT
1198
 42.45000
-94.67000
2025
2024
-
-
nmme
-
58 Saratoga Howard Count
98
na
na
na
na
SRGI4
map
digital
IADOT
1348
 43.37056
-92.47056
2025
2024
-
-
nmme cfs
59 Sibley (HW 60HW 9) Osceola
97
na
na
na
na
RSYI4
map
digital
IADOT
1574
 43.43333
-95.71472
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
60 Sidney (I29IA-2) Fremont
98
na
na
na
na
RSDI4
map
digital
IADOT
944
 40.68972
-95.78472
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
61 Sioux City (I29) Woodbury
98
na
na
na
na
RSCI4
map
digital
IADOT
1196
 42.48306
-96.39028
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
62 Sioux City Woodbury Cou
98
na
na
na
na
RSMI4
map
digital
IADOT
1135
 42.54944
-96.34778
2025
2024
-
-
nmme cfs
63 Sloan Monona Count
98
na
na
na
na
RSOI4
map
digital
IADOT
1053
 42.17111
-96.22944
2025
2024
-
-
nmme cfs
64 Steamboat Rock (US20) Hardin
98
na
na
na
na
RSBI4
map
digital
IADOT
1142
 42.45333
-93.05806
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
65 Storm Lk US71IA-3 Buena Vista
98
na
na
na
na
RSLI4
map
digital
IADOT
1330
 42.74750
-95.15139
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
66 Tipton (I80) Cedar
98
na
na
na
na
RTPI4
map
digital
IADOT
776
 41.64500
-91.12639
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
67 Urbana (I380) Buchanan
97
na
na
na
na
RURI4
map
digital
IADOT
992
 42.31250
-91.97556
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
68 US30 Mt Vernon Linn County
98
na
na
na
na
RVNI4
map
digital
IADOT
820
 41.91139
-91.42250
2025
2024
-
-
nmme cfs
69 W of Eddyville HW 137 Wapello
98
na
na
na
na
RDYI4
map
digital
IADOT
799
 41.14639
-92.64333
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
70 Waterloo (US20) Black Hawk
98
na
na
na
na
RWLI4
map
digital
IADOT
883
 42.45556
-92.30889
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
71 West of Bedford (HW 2) Taylor
97
na
na
na
na
RBFI4
map
digital
IADOT
1100
 40.67722
-94.71472
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
72 Williams (I35) Wright
98
na
na
na
na
RWII4
map
digital
IADOT
1150
 42.58722
-93.53139
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs
73 Williamsburg (I80) Iowa
98
na
na
na
na
RWBI4
map
digital
IADOT
855
 41.68750
-92.00861
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
AVG AVG nmme cfs

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Oregon IPM Center at State University National Plant Diagnostics Network The PRISM Group at OSU Fox Weather, LLC University of Utah Mesowest Western
 Region Pest Management Center National
 Institute of Food and Agriculture
All data provided "as is" and users assume all risk in its use - see full disclaimer. All NWS derived data is not subject to copyright protection. This site hosted by the Oregon IPM Center at Oregon State University with support from USDA APHIS, various USDA NIFA grants, and USDA Western Region IPM Center. Climate map data provided by OSU PRISM Group, realtime public weather data provided by U. Utah Mesowest and various other networks.
This site on-line since April 5, 1996; last update Jan. 17, 2025
Contact Len Coop, OSU OIPMC and Horticulture Dept. at coopl@oregonstate.edu or if you have any questions about this information.