Try this:

Code:
'****************************************************************
'*  Name    : 16F88_LM235.BAS                                   *
'*  Author  :                                    *
'*  Notice  : Copyright (c) 2020                                *
'*          : All Rights Reserved                               *
'*  Date    : 04/04/2020                                        *
'*  Version : 1.0                                               *
'*  
'****************************************************************
'PIC 16F88
'    Hardware Assignments
'    --------------------
' LCD circuitery
'01     - Vss (GND)
'02     - Vdd (+5V)
'08 RS  - PORTB.2
'09 E   - PORTB.3
'10 DB4 - PORTB.4
'11 DB5 - PORTB.5
'12 DB6 - PORTB.6
'13 DB7 - PORTB.7

' --------  bit a bit controllo 0=output  1=input

INTCON = 0 ' NO INTERRUPT
ADCON1 = %10001110 '
ADCON0 = %000101 'Disable Converter Module
ANSEL = %00000001 'Disable Inputs Tranne AN0
OSCCON = %01100000 'Internal RC set to 4MHZ
CMCON = 7 
TRISA = %10001111 ' impostazioni INP/OUT
TRISB = %00000000 ' delle porte
'----------------------------------------------------


DEFINE LCD_DREG PORTB       'Porta B DATA OUT 
DEFINE LCD_DBIT 4           '0 --> Bit 0-3 : 4 --> Bit 4-7 


DEFINE LCD_RSREG PORTB      'LCD register select port - Porta B --> RS
DEFINE LCD_RSBIT 2          'LCD register select bit  - Pin RS B2


DEFINE LCD_EREG PORTB       'LCD enable port - Porta B --> EN
DEFINE LCD_EBIT 3           'LCD enable bit - Pin EN B3


DEFINE LCD_BITS 4           'LCD bus size 4 or 8 
DEFINE LCD_LINES 2          'Number lines on LCD 


DEFINE LCD_COMMANDUS 2000   'Command delay time in us 
DEFINE LCD_DATAUS 50        'Data delay time in us


'    EEPROM Locations Codice ASCII es. a=97 b=98 c=99 ...
'===========================================================================    
'=========================================================================== 


'===========================================================================
'*****  SETTAGGIO PORTE 


'      VAR      PORTA.0     'LM235M            Pin 17  
IncButton    VAR    PORTA.1     'SW          Pin 18
DecButton    VAR    PORTA.2     'SW          Pin 1
SetButton    VAR    PORTA.3     'SW          Pin 2     
'      VAR    PORTA.4     '                  Pin 3     
'      VAR    PORTA.5     '                  Pin 4
Rele   VAR    PORTA.6     '                  Pin 15
'      VAR    PORTA.7     '                  Pin 16 
'-----------------------------------------------
'       Var       PORTB.0   '                   Pin  6
'       var    PORTB.1   '                   Pin  7
l_rs    var       PORTB.2   'LCD  sig. RS       Pin  8
l_en    Var    PORTB.3   'LCD sig. E         Pin  9
l_d4    var       PORTB.4   'LCD 4              Pin 10
l_d5    var    PORTB.5   'LCD 5              Pin 11
l_d6    var    PORTB.6   'LCD 6              Pin 12
l_d7    var    PORTB.7   'LCD 7              Pin 13


'--------------------------------------------------------------


'---------Define ADCin Parameters   
DEFINE ADC_BITS 10      'set number of bits in result
DEFINE ADC_CLOCK 3      'set clock source (3=rc)
DEFINE ADC_SAMPLEUS 50  'Set sampling time in uS




'    RAM Assignments and Variables
'===========================================================================        
CounterA    var byte    ' General purpose Variable
CounterB    var byte    ' General purpose Variable
CounterC    var byte    ' General purpose Variable
Dummy       var word  
DatoEE      var byte
Tcomp       VAR word
Grade       var Byte
TimeOut     var word    ' Variable for SetUp Menu Time-Out
temp var word
temperature var word
samples var word

sample VAR BYTE
quanta con 1250
Tmax VAR byte
Tmin VAR byte
'===========================================================================

Tmin=16
Tmax=30


 
START:
'*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~
'*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~  


Lcdout $FE, 1           'Clear screen
  
temp = 0 'Clear temp register
temperature = 0 'Clear temperature register
sample = 1 'Clear sample register
samples = 0 'Clear samples register

rele=0

main:
   
samples=0
FOR sample = 1 TO 20 'Take 20 samples
ADCIN 0, temp 'Read AN0 into temp variable
samples = samples + temp
PAUSE 40 ' Wait 1/4 seconds per reading
NEXT sample
temp = samples/20 'Average over 20 samples (Every 5 seconds)
temperature= (temp*10) */ quanta


Pause 200 ' Timeout for LCD to settle
LCDOUT $FE, 1 ' cancella LCD
LCDOUT $FE, 2 ' ritorna al primo carattere
lcdout $FE, 2, "Temp ",dec2 (temperature/100),".", dec1 (temperature//100),$DF,"C"
lcdout $FE, $C0, "Tmin ",#Tmin DIG 1,#Tmin Dig 0," Tmax ",#Tmax DIG 1,#Tmax Dig 0
      
If temperature/1000 > Tmax then
rele=1
else
rele=0
Endif

goto main